UK Advertising Experts

Advertise in the UK

Advertise in the UK with One Day Agency

Cement Your Brand’s Position in the UK's Global Market With British Advertising Campaigns

The UK has long been one of the wealthiest and most developed countries in the world. With an incredibly multinational demographic, both in terms of commercial competitors and local populations, it continues to be a high-demand destination for brand advertising.

Within the last year, the marketing sector in the UK has seen unprecedented growth, surpassing that seen for decades. There has been a net increase in advertising spend of 16% across all industries, with especially high investment in digital out-of-home, video on demand (VOD), event, and digital marketing campaigns.

From homegrown British brands to multinationals, start-up disruptors and niche service providers, we work with companies keen to advertise in the UK. It combines the appeal of an English-speaking population that is easy to engage with, the culturally influential position of the UK within Europe, and the ability to use high-impact marketing to improve brand recognition within adjacent markets.

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Why Advertise in the UK?

The size of the UK belies its status as an economic power, with a population of just over 68 million, an influx of 38 million tourists and business travellers a year, and a GDP per capita that is among the highest in the world – and significantly greater than many countries with vastly larger populations.

Part of the demand for UK advertising real estate is the density of the population in economic and commercial hubs like London, which comprises 13% of all people and businesses in the country, a world-famous city that is anticipated to reach a population of 10 million within the next five years.

Other benefits of UK advertising for brands from around the world are the strong media and advertising infrastructure with countless digital and physical platforms and channels, the trend-conscious nature of the consumer market, which leaves the door open for innovative and fresh offerings, and a stable commercial environment which makes it easier for companies to trade or market themselves in Britain.

Why One Day?

We are a highly experienced team of all-senior advertising and marketing professionals, with offices in both London and Manchester alongside our European hub in Warsaw. One Day’s specialist teams focus on global-centric promotions and cross-channel digital and outdoor advertising initiatives harnessing a strategic, hybrid approach.

Our goal is to ensure every brand we work with, however large or small, can tap into our expertise, advanced ad tech, cutting-edge media planning and buying resources and creative support, developing high-profile campaigns, messaging and graphics that generate sector-leading results, impressions and advertising returns.

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Advertise in the UK: Key Formats

Out-of-Home Advertising

Outdoor advertising covers a wide array of formats and placements, from huge-scale billboards in the heart of the busiest and most populated cities like London, Manchester, and Birmingham to innovative digital billboard displays and 3D video promotions in shopping centres and entertainment complexes.
Location is pivotal to ensuring our out-of-home advertising provides the advantages you expect. We can advise on specific billboards, screens, placements, and areas where viewer engagement is higher or there is a greater density of professionals, students, families, or tourists you want to engage with.

Out-of-Home Advertising
Public Transport UK Campaigns

The transport networks across the UK provide ample opportunities to attract brand attention or insert yourself into audience awareness, from high-profile TfL advertising through the London Underground to bus network advertising and billboards in train stations.
Extended waiting times, repeat exposure to commuters, and captive audiences using public transport services augment the impressions you receive with market and user research to ensure you select the best possible stations, stops, and aspects of the network for your brand.

Transport Advertising
TV and Video on Demand Promotions

While conventional broadcast marketing is often perceived as prohibitively expensive, the expansion of opportunities to advertise through streaming services, VOD platforms, and even video podcast episodes has made TV promotions more cost-efficient and effective than ever.
Around 40% of all UK ad spend remains invested in traditional TV advertising, and we can advise on the ideal strategic formatting, placements and messaging to ensure your broadcast ads feed into big-picture campaign objectives and deliver the returns you want.

TV and Video on Demand Advertising
Radio Advertising

Radio promotions are another familiar and long-standing way to raise brand awareness with UK audiences. As with TV advertising, there are diverse opportunities to position your brand alongside digital radio shows, podcasts, and entertainment series that align with your key audiences' preferences and priorities.
Within the UK marketing space, around 13% is spent on radio advertising, which demonstrates why localised radio shows and programmes, digital radio broadcasts, and tactically selected stations or podcasts are proven ways to improve your brand's position.

Radio Advertising

Latest Out-of-Home Campaigns.

See below our selected work in media planning and buying, click or tap to view.

Technology Services - International OOH Campaign

FMCG - Out-of-Home Campaign in Ireland.

Non-Alcoholic Beer - Out-of-Home Campaign & TV

More OOH Case Studies

Meet the Media Planning Team

Klaudia

Head of Department

Shelby

Media Planning & Buying

Scott

Media Planning & Buying

Meet One Day Team

"At One Day Agency, we understand that out-of-home advertising isn't just about visibility—it's about creating lasting impact where your audience lives, works, and moves. With our deep expertise in crafting targeted, high-performance OOH campaigns across the UK, we help brands cut through the noise and connect with consumers at the right place, at the right time. "

Ricardo Seixas, Founder and CEO, One Day Agency

Frequently Asked Questions.

There are countless reasons companies wish to capitalise on UK advertising opportunities, from those with an established position in Britain looking to augment their reach and brand familiarity to international organisations keen to gain market share within affluent audience segments.
Data reported in January 2025 indicated that the UK was the second most attractive investment destination for commercial professionals and businesses worldwide, behind only the US. This illustrates its continued status as a desirable location that appeals to business owners and leaders.
We often reiterate that every brand is unique, and the ideal strategic plan will depend on numerous variables, such as the company lifecycle, the audiences and viewers you want to engage with, your marketing budgets, the locations or regions you deliver goods and services to, and how long you need a promotion to run.
From innovative programmatic advertising to classic full-height billboards, cohesive digital marketing, and public transport promotions, there are countless options, all of which we can discuss to ensure you make confident, informed decisions.
Britain's advertising market is considered one of the most competitive in the world, home to a diverse professional workforce and global-scale marketing. Spending on advertising is forecast to eclipse £43 billion this year, with a dynamic blend of digital, physical and out-of-home marketing techniques.

Full-funnel Advertising Agency

Our Work

About Us

What our clients are saying…

Codorníu Raventos - International Brand Manager Europe & Asia

“About Nielsen data: It is once again very positive for us because while the category fell by 11.6% in value, and the cava category decreased by 5.6%, we are once again the green dot in the data, growing vs. the previous year's and increase of market share. These results are clearly related to the MKT campaigns during April and July. So, once again, thank you very much for your wonderful support. We are achieving great things in the UK thanks to these impactful marketing campaigns.”
Mark Hodson, VP of Marketing at UNiDAYS

"Freshers is such a pivotal moment for UNiDAYS. As the UK's leading student platform, working with a tried and trusted team was key. We've found that in One Day. Their professionalism and unique approach to measuring effectiveness and incrementality is truly exceptional".
General Manager, Itchy Baby Co

“We needed a digital agency that rocks the pants off it in the social & digital space that was fast, flexible, insightful and fun. Critical for us was someone that was responsive, really understood paid digital, and had the ability to make short, sharp, quick creative ads. One Day is that Agency. We are extremely excited to see what 2021 brings working with the talented team as we launch into the UK.”
Gurveer Chana, BigCommerce's Demand Generation Manager

“It was an incredible experience partnering with IDA agency. We handed them a strict budget, and they met it and exceeded our expectations. Their professionalism, creativity, and unwavering support were instrumental in our campaign’s success. From designing ad t picking locations and strategies, the were with us every step of the way, and we couldn’t be happier with the results.”