How OOH Booking Actually Works: A First-Timer’s Guide

Part of our series on growing your brand without a giant budget.

“It’s slow and expensive to book” is one of the most common assumptions we hear about Out of Home advertising, and it is largely out of date. UK OOH revenue hit a record £1.44 billion in 2025, its highest ever, reaching 98% of the UK population every week according to Route audience data. It is a genuinely large, growing channel, and the booking process behind it is more structured, and often faster, than most first-time advertisers expect. Here is how it actually works.

The in-charge period: how a booking is structured

Classic formats, meaning 6-sheets, 48-sheets, 96-sheets, London Underground panels and bus advertising, all run on a standard two-week “in-charge” period. That is the window your campaign is booked to run. Alongside it sits a posting period, the time it takes for your creative to physically go up across every site, which can span several days and often begins before the in-charge date itself, so your campaign is typically fully live before the clock officially starts. Digital formats work differently and more flexibly: they can be bought in shorter bursts and allow for day-parting, running your ad only at the times of day that matter most to your audience or even according to the weather!

Options: how you hold a site before you commit

Before you commit budget to a site, you can place an option, an intent to buy that is raised alongside a purchase order. An option holds a site for exactly one week, from Friday at 12 noon to the following Friday at 12 noon. If it is not converted to a confirmed booking by that deadline, the site goes straight back onto the open market and becomes available for another advertiser to option or buy. It is a useful mechanism for a business weighing up a decision without losing the site to someone else in the meantime, but it does mean a decision genuinely has to be made within the week.

Lead times: how far out to plan

The general recommendation is to book around 16 weeks ahead of your in-charge date. That is a guide rather than a hard rule, and it moves depending on demand: key periods such as the run-up to Christmas sell out considerably faster, which is the same seasonal pressure we covered in Planning Your Q4 in the Summer and Booking Closer to the Date. Outside of those peak windows, there is considerably more flexibility, and digital formats in particular can often be booked and live much faster than the 16-week guide suggests.

Artwork deadlines: what to have ready, and when

Standard, classic formats need finished artwork 3 weeks before the in-charge date, to allow time for printing and physical installation across every site. Digital formats are far less demanding on this front: artwork is typically needed just 1 week before go-live, since there is no printing or physical panel-changing involved. This is one of the clearest practical advantages of digital OOH for a business working to a tighter production timeline.

What a good OOH brief includes

The more complete the brief, the faster and more accurately a media owner or agency can put options and proposals together. A solid OOH brief covers:

• Campaign objectives and KPIs
• The role OOH is meant to play: driving awareness, driving response, building fame, or supporting activity at the point of sale
• Target audience
• Geography, whether that is hyper-local, regional or national
• Timing and duration
• Budget, or a realistic estimate if an exact figure is not yet set
• Other media being used or considered alongside it
• Any environment or format preferences, and whether you are open to digital, classic, or both

Programmatic DOOH: the faster, smaller-budget way in

Programmatic DOOH is the automated buying and selling of digital screen inventory, bought through demand- and supply-side platforms in much the same way as programmatic digital advertising elsewhere. It can be targeted by location, time of day, weather and audience segment, and crucially for a smaller advertiser, it opens the door to considerably smaller budgets and faster turnaround than a classic panel booking. If the booking process above sounds more involved than you have time or budget for right now, this is usually the right place to start.

Your OOH booking checklist

• A clear brief covering objectives, audience, geography, timing, budget and format preferences, ready before you approach a media owner or agency
• A realistic sense of your lead time: 16 weeks as a general guide, earlier still for peak periods
• Artwork production planned against the right deadline: 3 weeks out for classic formats, 1 week for digital
• A plan for turning any option into a confirmed booking inside its one-week window, so you do not lose the site
• Programmatic DOOH considered as an entry point if budget or timeline is tight

Booking your first OOH campaign?

We handle the whole process end to end, from brief to booking to artwork deadlines, so nothing gets missed. Drop us an email at sales@hurstmediaagency.co.uk and we will talk it through with you.