July 14, 2026
Choosing the wrong poster format for a London wheatpaste campaign is one of the most avoidable production errors a brand can make. It costs money twice — once in the print run and once in the campaign underperformance when posters that are too small disappear into the visual noise of a busy London street, or when posters designed to US standard dimensions require non-standard (and expensive) UK print runs.
The UK printing industry uses ISO metric paper sizes and a set of UK-specific advertising formats that have been standard in the London outdoor advertising market for over a century. These formats exist because they work with London’s wall sizes, hoarding panels, and the visual scale of the city’s streetscape. Understanding them before you brief a UK printer or an operator saves time, saves money, and ensures the printed product actually fits the surfaces it’s going up on.
This guide covers every format relevant to London wheatpaste campaigns — the ISO metric sizes, the UK-specific advertising formats, multi-sheet large-format approaches, and the paper weight considerations that determine whether your posters survive London’s weather for the duration of your campaign.
The UK uses the ISO 216 paper standard, which means sizes you may not be familiar with if you’ve only worked in US markets. The key ones for wheatpasting campaigns are:
| Format | Dimensions (mm) | Dimensions (inches approx.) | Best Use |
|---|---|---|---|
| A2 | 420 x 594 | 16.5 x 23.4 | High-density placement, indoor-adjacent positions |
| A1 | 594 x 841 | 23.4 x 33.1 | Secondary format, good for layered or dense campaigns |
| A0 | 841 x 1189 | 33.1 x 46.8 | Standard wheatpaste format — the workhorse |
| 2A0 | 1189 x 1682 | 46.8 x 66.2 | Large-format single-sheet for premium walls |
A0 is the format that professional wheatpaste campaigns in London use as their baseline. At 841mm x 1189mm, it’s large enough to read clearly from across a four-lane road, affordable to print in runs of 100-500 sheets, and fits cleanly on the majority of London’s postering surfaces. Almost any print file designed for UK advertising will have an A0 version. If you’re printing in the UK for the first time, A0 is the format to start with.
At A0, type size needs to be substantial for the primary message to read clearly at distance. A title in 48pt type on an A0 print proof looks reasonable at desktop viewing distance. On a wall viewed from four meters away, it reads as secondary information. Street-scale design typically runs primary type at 80-120pt minimum.
A1 is useful for campaigns that want to combine multiple sizes — placing A0 sheets in primary positions and A1 in denser or smaller secondary positions. It’s also cost-effective for campaigns with tight budgets that need volume over scale. The visual impact at A1 is noticeably lower than A0 in London’s competitive visual environment; it works better in quieter or more residential postering zones where competition for visual attention is lower.
Beyond the ISO metric sizes, London’s outdoor advertising industry uses several UK-specific formats that have been standard in the market since the era of commercial billposting in the nineteenth and early twentieth centuries:
The Double Crown is a UK portrait format approximately half the area of A0. It’s the traditional UK poster size for entertainment advertising — the format associated with theater playbills, cinema showings, and music event promotion throughout the twentieth century. For theater and film campaigns that want to invoke the tradition of this format, Double Crown placements alongside larger A0 sheets can add a period-appropriate layer to the campaign visual mix.
The Quad Crown is a UK market format — roughly equivalent to two Double Crowns placed side by side. It’s the standard format for UK hoarding panels and fitting the horizontal display opportunities on construction site hoardings and boundary walls. For campaigns with a strong horizontal image — a film still, a market, an artist photo with wide composition — Quad Crown is worth considering as the primary format. It requires either a market-first design or deliberate cropping from the standard portrait key art.
These formats are billboard scale — 48-sheet is approximately 6m x 3m, 96-sheet is approximately 12m x 3m. They’re not standard for wheatpaste campaigns (they require professional installation rigs and are associated with the formal outdoor advertising market) but are mentioned here because US brands sometimes ask about London “billboard” options in the context of a broader street campaign discussion. Wheatpaste at these scales exists in the form of multi-sheet installations on large building walls, but they’re planned and priced differently from standard campaign poster runs.
American Guerrilla Marketing coordinates wheatpaste campaigns in London and across the UK through our international operator network.
London is a wet city. Annual rainfall is approximately 600mm, distributed fairly evenly throughout the year without a pronounced dry season. Any poster going up outdoors in London needs to be specified for wet conditions, not just for print quality.
Lightweight 90gsm poster paper is tempting because it’s cheap. In dry conditions it looks fine. After its first London rain it becomes transparent, wrinkled, and partially detached. Campaigns that specify 90gsm for outdoor use in London are often paying twice — once for the print run and once for a reprint after the first week’s weather degrades the first run. Don’t use it for outdoor campaigns regardless of season.
120gsm is the minimum practical weight for outdoor wheatpasting in London’s climate. It handles moderate rain without immediate failure, holds paste adhesion reasonably well, and maintains print quality at a level that’s acceptable over a two-week campaign window. For summer campaigns with a shorter weather window and less rainfall, 120gsm is an acceptable economy choice.
150gsm is the weight that London’s professional postering operators generally recommend and that most entertainment-industry campaigns specify. At this weight, paste adhesion is strong, the poster survives multiple rain events without significant degradation, and print quality holds over a three to four week campaign period. The cost difference between 120gsm and 150gsm is approximately 20-30% on a per-sheet basis — worth paying for any campaign that needs to stay up and visible for more than ten days.
Very heavy paper (170gsm and above) is overkill for most standard wheatpaste campaigns but makes sense for premium placements on featured walls where the campaign will run for a month or more. At higher grammages the poster behaves almost like a thin card once pasted, holding its position and quality against extended weather exposure. The installation is also slightly more involved — heavier paper needs more paste and takes longer to apply cleanly.
The alternative to a single large-format sheet is multiple standard sheets installed together on a large wall to create a single oversized image. This approach is common in Shoreditch and in premiere-adjacent campaign zones where large wall surfaces exist and the campaign wants mural-scale visual impact without the cost of 2A0 or custom-size print runs.
Typical configurations:
Multi-sheet installations require more crew time — alignment, consistent paste application, and the physical management of large-sheet paper all take longer than placing single-sheet posters. Budget 30-50% additional crew time per multi-sheet placement compared to equivalent single-sheet placements.
“A 4×2 multi-sheet installation on a clean Shoreditch wall does more work than forty individual A0 placements spread across the neighborhood. Scale creates dominance. Dominance creates the impression that the brand has taken over something real.”
UK trade printers accept standard print file formats: PDF/X-1a or PDF/X-4 are the preferred standards. CMYK color profile (not RGB) is mandatory — RGB files convert unpredictably in print production. Bleed of 3-5mm on all edges is standard for poster printing. Resolution at 150-200 DPI is typically sufficient for large-format printing — higher resolution at poster scale doesn’t improve print quality and creates unnecessarily large files.
US design teams working for UK campaigns sometimes submit files in US paper sizes or with RGB color profiles. Both cause problems. Brief your design team on UK specifications before artwork production begins.
People searching this topic usually want a fast answer to a production question: what size should we print for London, and what actually fits the walls available in market? search results results around wheatpaste poster sizes favor clear dimensions, paper recommendations, and real-world use cases. That means the most helpful angle is not just listing measurements. It is matching each format to how London campaigns are bought and posted.
In practice, smaller runs often use repeatable formats that crews can place quickly across mixed surfaces, while larger creative concepts benefit from tiled executions or larger hoarding-ready sheets. Searchers also care about durability. London weather, overnight posting windows, and porous brick surfaces all affect whether a poster should be heavier stock, split into panels, or simplified for faster placement. A size guide that ranks well tends to explain which formats are easiest to print locally, which work best in East London creative districts, and which are better for entertainment, fashion, or event-led campaigns.
That is why this article should read like a buying guide. Brands need to know what is standard, what is custom, how different sizes change print and posting costs, and when a larger format genuinely improves noticeability versus when repetition beats scale. The highest-value search intent here is operational and commercial: pick the right dimensions once, avoid production waste, and make sure the creative fits the London surfaces you can actually secure.
One more practical consideration is artwork adaptation. A layout that looks balanced at A0 may lose hierarchy when reduced to smaller repeat posters, while a design built for modular posting can often scale up cleanly. Brands that decide size and artwork together usually waste fewer prints and get a more consistent street read across London.
Poster size selection in London is not a creative decision made in a vacuum — it’s a function of the specific walls on the surface list. AGM’s operators assess each approved location before the campaign brief is finalized and feed wall dimensions back to the client so artwork is specified correctly from the start. Getting this wrong is expensive: printing 200 A0 sheets when the best walls on the surface list accommodate Quad Crown means either reprinting or compromising placement quality.
The standard London approval process for our campaigns includes wall measurement and surface photography delivered to the client with the confirmed surface list. That documentation also serves as the baseline for the post-campaign proof-of-posting comparison.
When a campaign calls for a wall-scale installation rather than a standard poster placement, multi-sheet printing is the technique. Multiple A0 or custom-sized sheets are printed with a grid alignment and posted in sequence to create a single large image. We’ve executed multi-sheet installations in Shoreditch and Brixton for clients who wanted the visual impact of a mural without the permanence and planning requirements of a painted installation.
Multi-sheet posting requires more prep than single-sheet placement. The wall needs to be measured and gridded before posting, the paste needs to be applied in sections rather than all at once to prevent the first sections drying before the later sheets can be aligned, and the crew needs two people for large-format work — one managing alignment, one managing paste. Our operators are trained for this specific technique and have done it on walls up to 4 meters wide and 3 meters tall across East London and Brixton.
Paper weight for multi-sheet installations should be at the higher end: 150gsm at minimum, 180gsm preferred. Heavier paper holds its shape better during application and is more resistant to the tearing and bubbling that can occur when lighter paper is handled in windy or humid conditions.
London’s weather is a real variable in poster campaign planning. The city receives approximately 106 days of measurable rainfall annually, with the autumn and winter months (October through February) being wetter and windier than the summer. Campaigns running in this window need heavier stock: 150gsm as a baseline, 170gsm if the locations include walls with significant wind exposure or limited shelter from overhangs.
Paper weight and paste formulation interact. Thinner paper soaks up paste fast, can wrinkle and bubble when wet, and is more likely to tear during application in cold, damp conditions. Heavier paper absorbs paste more slowly, allows more time for smoothing and alignment, and holds its structure through the application process. For London autumn and winter campaigns, the extra print cost of going to 150gsm or 170gsm is consistently justified by the improvement in placement quality and longevity.
We’ve run campaigns on the same walls in both summer and winter conditions with different paper specifications and the difference in post-campaign longevity is significant. A 120gsm poster applied in October London can show weather damage within two weeks. The same placement on 150gsm stock typically holds clean for four to six weeks.
Based on years of running campaigns across London, here’s how we specify format by campaign type:
Music releases and tour announcements: A0 for general placements, Quad Crown for hoarding sites near venues. Music fans photograph posters they encounter near venues — A0 gives a clean image that works in both physical and digital contexts.
Film releases: A0 minimum, Double Crown or Quad Crown for high-traffic hoarding sites. Film artwork needs to hold the imagery quality that reflects production value — go to 150gsm minimum for film campaigns.
Theater: A0 or larger for neighborhood placements. Theater posters compete with a lot of visual noise in the West End specifically — bigger format cuts through better. Custom horizontal Quad Crown works well for theater titles where the show name is the primary visual element.
Fashion: A0 for standard placements, consider custom large-format for key locations in Shoreditch or Portobello. Fashion campaigns benefit from the prestige signaling of scale — a larger poster signals a larger brand presence even if the underlying campaign is modest in total location count.
A0 (841mm x 1189mm) is the most common format for London wheatpaste campaigns. It’s large enough to be clearly visible at street scale, affordable to print in volume, and fits most standard wall spaces. Double Crown (508mm x 762mm) is a UK-specific format with a long history in entertainment advertising. Quad Crown (1016mm x 762mm) is the standard hoarding format for horizontal placements.
120gsm is the minimum viable weight for outdoor London campaigns. 150gsm is the recommended standard for campaigns running through wet weather or for more than ten days. At 150gsm, paste adhesion is stronger, the poster survives multiple rain events, and print quality holds over a three to four week campaign window. 90gsm paper is not suitable for London outdoor use regardless of season.
US standard sizes (24×36 or 27×40 inches) don’t align with UK standard formats, meaning UK printers have to quote non-standard runs, which costs more. UK printers are set up for ISO metric sizes (A0, A1, A2) and UK-specific formats (Double Crown, Quad Crown). Designing and printing to these UK standards saves money and ensures the posters fit the surfaces they’re going on.
Multi-sheet large-format installations are appropriate when the campaign needs to dominate a specific wall — for premium placements near premiere venues, in Shoreditch’s most competitive zones, or for campaigns that need mural-scale visual impact. They cost significantly more in print production and installation time than standard A0, but create substantially greater visual presence. Typical configurations run 2×1, 2×2, 3×2, or 4×2 A0 sheets tiled together.
UK trade printers are the right choice for London campaigns. They eliminate customs risk, remove international shipping costs, and allow turnaround times as short as two to three working days. American Guerrilla Marketing coordinates UK print production as part of campaign management for US clients — you send us the approved artwork file and we handle the print production and delivery to the posting crew.
American Guerrilla Marketing coordinates wheatpaste campaigns in London and across the UK through our international operator network.
Millie Phillips
Campaign Architect — American Guerrilla Marketing
Email: [email protected]
Office: (646) 776-2770
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American Guerrilla Marketing — Los Angeles
Street-level campaigns in Los Angeles and nationwide. Wheatpasting, LED trucks, street teams, and more.
(646) 776-2770
July 14, 2026
July 14, 2026
July 14, 2026
July 14, 2026
July 14, 2026
