Out-of-home advertising is having a very good decade. The billboards, digital screens, transport media and building wraps that make up the sector reached a record £1.44bn in UK revenue in 2025, up 2.6% on the year, according to Outsmart, the industry's trade body, with figures collated by PwC. Digital out-of-home now accounts for around two-thirds of that total, and the shift from static sites to connected screens has turned a mature advertising channel into a growth industry again.
And yet a great many of the businesses driving that growth spend part of every year uncomfortably short of cash. The reason is not weak demand or bad management. It is the structure of the industry itself. Out-of-home money is seasonal; it is lumpy, and for the platforms and media owners in the middle of it, the cash goes out well before it comes in. The busiest, most successful quarter of the year is frequently the one that strains the balance sheet hardest.
This blog is about that contradiction: why an expanding, high-demand sector produces such awkward cash flow, why the businesses within it are harder to fund than their growth would suggest, and what works to bridge the gap.
The growth is not nostalgia for billboards. It is the reinvention of the medium as a digital one. Digital out-of-home, the connected screens in roadside sites, rail stations, retail, malls and airports, reached a record £964m in 2025 and now accounts for 67% of all UK out-of-home spend, up from just 32% a decade earlier, according to the IAB UK. The physical poster has quietly become a network of internet-connected screens.
What makes those screens valuable is that they can be bought like digital media. Programmatic buying, trading screen inventory in real time the way online display is traded, is maturing quickly, and UK marketers expect programmatic to feature in close to half of their out-of-home campaigns within the next couple of years. That turns a static, long-lead medium into a flexible one that can respond to the time of day, the weather, an event or a live sporting moment. It also lets brands plan out-of-home as part of an integrated omnichannel campaign rather than as a standalone poster booking.
The result is a channel attracting fresh investment and new kinds of business:
It is a growth industry. But that same digital, data-led, platform-shaped model is exactly the one that runs into the cash-flow problem this article is about, and one cautionary tale from 2025 makes the point starkly. A mid-tier operator entered liquidation in November of that year despite reporting revenue growth of several hundred per cent, undone by costs it could not carry through the gap. Growth and cash health are not the same thing, and in this sector the difference can be fatal.
Advertising follows the retail calendar, and the retail calendar has a mountain in it. The fourth quarter, running into Christmas, is when brands spend most heavily to reach consumers, and out-of-home rides that wave. Outsmart's own figures show the fourth quarter of 2025 was the sector's strongest, with revenues of £404.8m, and digital out-of-home taking a 69% share of that quarter specifically as advertisers chased flexible, high-impact screen inventory in the run-up to Christmas.
That concentration, reported by Outsmart with figures collated by PwC, is good news for the year-end numbers and hard on the cash flow that produces them. A business whose revenue peaks sharply in one quarter has to gear up for that peak in advance:
The revenue is real, and it is coming, but it arrives after the costs, not alongside them.
There is a second layer of seasonality beneath the annual one. Campaigns are project-based; they start and end on fixed dates, and they are frequently invoiced in arrears and paid on the long terms that large advertisers and media agencies tend to impose. So even within a strong year, the money moves in waves rather than a steady stream, and the gap between doing the work and being paid for it can be substantial.
The gap opens at the peak. Costs are incurred to service the fourth-quarter rush before the revenue from it is collected. Illustrative.
The businesses most exposed to this are the ones sitting in the middle of the transaction, connecting advertisers with the physical spaces their campaigns run on. A modern out-of-home platform is often a marketplace: it links brands seeking exposure with the owners of billboards, screens and live media sites, and manages the whole process from discovery to delivery.
That position is commercially powerful and financially demanding, because a marketplace usually has to satisfy both sides of itself on different timelines. Media owners and site partners want to be paid promptly for the space they provide. Advertisers, and the agencies acting for them, expect to pay on their own terms, which are often measured in months. The platform in the middle absorbs the difference, funding the gap between settling with its supply side and collecting from its demand side.
Scale that model up through a busy fourth quarter and the strain is obvious. The more campaigns a platform runs at its seasonal peak, the more cash it has to lay out ahead of payment, precisely when volumes are highest. Success widens the gap rather than closing it. This is the classic marketplace cash-flow trap, and out-of-home, with its long agency payment terms and its sharp seasonal peak, is one of the industries where it bites hardest.
You might expect a growing business in a growing sector to find funding easy. Many out-of-home and ad-tech businesses find the opposite, for reasons that have nothing to do with how well they are doing.
The first is that many are venture-backed and pre-profit. They are investing hard in technology, in sales, and in building out their supply of sites and screens, and like most scaling technology businesses, they are not yet turning a profit. A great many traditional lenders decline loss-making companies almost automatically, regardless of their growth, their backing or the quality of their revenue. The lending pool for a pre-profit business is narrower.
The second is that these businesses are asset-light in the traditional sense. A billboard platform does not necessarily own the billboards; it owns the technology, the relationships and the contracts. A bank looking for physical security to lend against does not find much, even though the business may be running millions of pounds of campaigns across the year.
The third is the seasonality itself. A lender assessing a single quarter's figures in isolation can misread a seasonal peak in burn as a problem rather than a pattern, and price or decline accordingly. Understanding an out-of-home business means understanding its shape across a full year, which not every lender takes the time to do.
The result is that businesses which are fundamentally healthy, growing, well-backed, serving real demand, can struggle to raise the working capital they need to get through their own busiest season. The problem is not the business. It is that the case has to be put to the right kind of lender, in the right way.
The good news is that the funding does exist, and it does not require giving up equity to access it. For a scaling business whose main concern is dilution, that matters, because raising an equity round to cover a predictable seasonal cash-flow gap is an expensive way to solve a temporary problem. The gap is temporary; the ownership you would sell to fill it is permanent.
It matters more in the current market. The British Business Bank's Small Business Equity Tracker reports that equity investment into UK smaller businesses fell by 4% to £12.3bn in 2025, with capital concentrating into fewer, larger deals. Selling shares to cover a seasonal gap was always expensive; in a tighter equity market, it is harder to arrange as well.
Several structures fit the out-of-home cash-flow shape well:
For a venture-backed, pre-profit platform, venture debt is often the right instrument. It is designed precisely for loss-making, high-growth companies that traditional banks avoid, and it is underwritten against the trajectory of the business and the strength of the investors behind it rather than against profit or physical security. It can be sized and timed to bridge a seasonal peak, and repaid as the fourth-quarter revenue lands.
For a business with a substantial book of unpaid invoices from advertisers and agencies, working capital facilities and asset-based lending can release the cash tied up in those receivables, advancing against invoices as they are raised rather than waiting out the long payment terms. This is frequently the cheapest funding available to an out-of-home business, because it is secured on money the business has already earned.
And for a defined seasonal gap in a business that is closer to profitability, a cash flow loan sized against the year's earnings can smooth the peak without any dilution at all. In practice, the best answer is often a combination, and the right one depends on the specific shape of the business, which is where independent advice earns its place.
There is one point that separates the businesses that fund their seasonality comfortably from the ones that scramble, and it has nothing to do with which product they use. It is timing.
A business that arranges its seasonal funding while it still has runway is negotiating from strength. It can approach several lenders, compare terms, structure the facility properly, and avoid the personal guarantees and punitive pricing that come with a rushed, last-minute raise. A business that waits until the crunch is a borrower with a deadline, and a deadline weakens every term on the table.
We saw exactly this recently. A venture-backed global platform connecting brands with live media spaces worldwide came to us ahead of its December peak, its highest cash-burn period of the year. Because its management had forecast the need and acted while runway remained, we were able to arrange a £500,000 venture debt facility quickly, structured as a secured term loan with a floating charge and, importantly for the founder, no personal guarantees, which are usually difficult to eliminate at that level. The facility bridged the seasonal gap on competitive terms despite the business being pre-profit, and let the team stay focused on growth rather than on cash. The point of the story is not the structure. It is that planning ahead is what made those terms available.
At FBX Capital Partners, we are an independent UK debt advisory firm, and funding growing, asset-light businesses through exactly these situations is a core part of what we do. We work across the whole lending market rather than a single lender's product set, which matters for an out-of-home or ad-tech business, because the lenders who understand a seasonal, pre-profit, marketplace model are a specific subset of the market, and finding them is most of the job.
If you run an out-of-home, ad-tech or media platform and can see your seasonal peak coming, the useful move is to plan the funding for it now rather than when the cash is tight. The demand in your sector is real and growing. The cash-flow gap is a solvable, temporary problem, and solving it should not cost you a share of the company. Do get in touch with the team if it would help to talk it through.
This article is general information about funding options for businesses in the UK and is not legal, financial or tax advice. Specific situations should be discussed with appropriately qualified advisers.
Because growth and cash health are not the same thing. Out-of-home revenue is heavily seasonal, peaking in the fourth quarter as brands spend into Christmas, and a business has to gear up for that peak, securing sites, committing to inventory, servicing more campaigns, well before the revenue arrives. Campaigns are also invoiced in arrears and paid on the long terms large advertisers and agencies impose. So the busiest, most successful quarter is often the one that strains cash hardest, and the faster a business grows, the wider that gap tends to open.
Several structures fit, and none require selling shares. Venture debt suits venture-backed, pre-profit platforms, since it is underwritten against trajectory and investor backing rather than profit or physical security. Working capital and asset-based facilities release the cash tied up in unpaid advertiser and agency invoices, usually the cheapest option because it is secured on money already earned. And a cash flow loan can smooth the peak for a business nearer profitability. Raising equity to cover a temporary, predictable gap is expensive, because the gap is temporary while the ownership you would sell is permanent. The most important factor is timing: arranging funding while runway remains secures far better terms than a last-minute scramble.
