Apparently, London is one of the most congested cities in the world - which is terrible for commuters but absolutely brilliant for anyone buying OOH advertising in England’s capital. The digital billboard inventory available to reach your audience here is staggering. From Global's Tube Station (Subway) network to JCDecaux's Urban Panels and Bus Shelters, as well as their Overground (Train Station) inventory - you can market to your audience ad nauseam (pardon the pun).
London boasts more than 9 million residents and draws tens of millions of visitors each year. But the real opportunity with digital billboard advertising in London is just as much about concentration as it is reach. The city's transport network alone carries over 3 million Tube journeys on an average weekday, and commuter dwell time at stations like Waterloo, King's Cross and Liverpool Street is among the highest of any DOOH environment in Europe. That means people don’t just see your digital billboard; they actually look at it and take it in.
CAASie lets you choose your exact London screens, set your own budget and see exactly where your ads ran. No account managers. No opacity. Just your campaign, your data, your call.
Like Google or Meta ads, I'm a self-service ad platform.
All you have to do is make an account to get started.
You’ll find that costs can often vary by placement, format and time of day. For example, roadside and shopping centre screens will price differently to transit environments.
As a platform, CAASie has no minimum spend, no lock-in contracts and no managed service fees: you set your own budget and only pay for what runs. That said, some publishers have their own thresholds. JCDecaux, for example, requires a minimum campaign spend of £1,000 before they'll accept artwork. On average across London inventory, you're looking at around £0.45 per ad play with an effective CPM of approximately £36.
Right now? You can tap into over 8,000 digital screens right across the Greater London area. I've plugged into the city's top media publishers, including Global, Clear Channel, and London Lites, as well as JCDecaux, which holds a significant share of transit inventory across the Underground, overground rail and bus networks. That means you can put your brand across high street bus shelters, shopping centres, roadside billboards and major transit hubs.
If it's digital and out-of-home in London, there's a very good chance you can buy it on CAASie.
Yes – that’s why I’m here! Traditional OOH buying often bundles the good screens with the... less good screens to sell them to you as a package. CAASie is entirely self-serve. You open the map, cherry-pick the exact screens you want, set your campaign dates and budget, and hit go. No pushy account managers and zero guessing games about where your money went.
Not unless you just really want to spend one. CAASie was built to smash the myth that you need a six-figure media budget to get on a London billboard. Whether you’ve got £500 or £50,000, you can run a highly targeted campaign on specific screens at the exact times your audience is walking past. As you’re using my self-serve platform, you aren’t paying for a bloated agency layer just to push a button for you.