TV media buying agencies UK: who can buy linear and BVOD?

What to take away

UK linear airtime is sold by individual broadcasters and sales houses, not one exchange, so a TV media buying agency's trading routes matter more than its size.
Group-owned TV media buying agencies such as EssenceMediacom, Zenith, OMD UK, Carat UK and Havas Media UK buy through their group's trading desk. Independents such as the7stars, Bountiful Cow and Medialab hold their own terms.
BVOD trades separately from linear on different metrics. Show the split before the first buy.
Ofcom's COSTA sets how many advertising minutes may run and where breaks fall. Clearance and the ASA codes govern the content.
BARB is the audience currency behind linear deals. Streaming platforms report their own BVOD figures.
Ask for named trading contacts, deal terms and a written stop rule before you appoint anyone.

How UK television airtime is sold

Linear television is not bought on an open exchange. Each broadcaster, or the sales house acting for it, sells its own inventory. A buyer holds terms with each one separately.

ITV sells across its own portfolio, including ITV1 and ITVX. Channel 4 sells through its own sales operation. Sky Media sells Sky's channels and several partner channels.

Scotland works differently. STV holds the Channel 3 licences for central and northern Scotland, so a campaign that needs Scottish reach may need a separate conversation from the rest of the UK.

That structure explains why agency scale is only part of the picture. What counts is which sales houses an agency trades with directly, and whether airtime is bought through a third party that adds its own margin.

Which UK TV media buying agencies buy linear and BVOD

Six agency groups hold the largest UK television deals. Each trades through one investment desk, so a client inherits the group's terms rather than a standalone deal.

Group-owned agencies

EssenceMediacom(GroupM, WPP), London. The group's investment team negotiates with ITV, Channel 4 and Sky Media and places linear and BVOD.
Zenith(Publicis Media), London. Publicis Media's trading desk buys linear airtime and addressable BVOD for Zenith and its sister agencies.
OMD UK(Omnicom Media Group), London. Omnicom's investment desk covers linear and BVOD, and trades for PHD UK and Manning Gottlieb OMD too.
Carat UK(dentsu), London. dentsu's UK trading desk buys linear and BVOD for Carat, iProspect and other dentsu brands.
Havas Media UK, London. Havas Media Network's investment team handles linear airtime and streaming buys.
UM UK and Initiative UK(IPG Mediabrands), London. The Mediabrands investment team trades with UK sales houses for both agencies.

Independents hold their own terms with sales houses. Several specialise in television.

Independent agencies

the7stars, London. One of the largest UK independent media agencies, buying TV directly with sales houses.
Bountiful Cow, London. Independent television specialist for planning and buying, with no group trading desk in between.
Medialab, London. Independent agency that plans and buys TV, using BARB data to adjust delivery at spot level.
The Kite Factory, London. Independent media agency covering TV planning and buying alongside other channels.
John Ayling & Associates (JAA), London. Long-established independent TV buying agency.
All Response Media, London. Performance agency that buys direct response TV and handles clearance at short notice.
Brilliant Media, Leeds. Independent Northern agency for regional TV and BVOD.

Ask each candidate how it is paid. TV agency remuneration is typically a percentage of media spend or a fixed retainer, commonly between 5% and 15% depending on spend and scope. Some sales houses pay commission to the agency instead, and that should be disclosed.

What a TV agency holds that a direct buyer may not

A large advertiser can approach a sales house directly. A small one is usually offered a lower-priority contact and standard rates.

Agencies bring booked terms: annual volume commitments, audience guarantees and priority positions agreed before the market tightens.

They also bring the daily work. Copy instructions and clearance queries arrive at short notice, and a buyer with standing contacts resolves them faster.

Check ownership of the deal. If terms with a sales house sit in the agency's name, you may not inherit them when the relationship ends. Get that confirmed in writing.

Rules on scheduling, content and data

Ofcom's Code on the Scheduling of Television Advertising (COSTA) governs how many minutes of advertising may run in an hour and where breaks can fall. It sits under the Communications Act 2003, which sets out Ofcom's broadcasting duties.

Content is a separate layer. Commercials are cleared before broadcast, and the advertising codes published by the ASA and CAP apply to what appears. Restrictions on advertising less healthy food and drink before the 9pm watershed also shape which spots are available.

Addressable and BVOD buys use audience data, which brings the UK GDPR into scope. The ICO guidance hub is the starting point for how audience segments may be built and used.

Measuring linear and BVOD

Check the reporting basis before you sign. Measurement faults to find before acting on a report usually begin with two systems that were never reconciled.

BARB is the joint industry currency for UK television audiences, and linear deals are commonly priced and settled against BARB estimates. Read the contract to see which audience definition applies.

BVOD numbers come from the platforms. ITVX, Channel 4's streaming service, My5 and Sky's platforms each report their own figures, and each defines a view differently.

Ask what counts as a view, and over what window. Two agencies can report the same campaign with different totals without either being wrong.

Comparing two routes to a TV buy

Most advertisers choose between a specialist television buyer and a full-service agency that subcontracts the airtime.

Routes to a UK TV buy

Independent TV specialist

Who trades: Direct sales house terms
What you get: Detailed spot work
Where it goes wrong: Narrow planning view

Group-owned agency

Who trades: Group investment desk
What you get: Scale terms, one plan
Where it goes wrong: Attention varies at spot level

Full-service agency

Who trades: Direct or trading partner
What you get: One plan, one invoice
Where it goes wrong: Undisclosed margin possible

Comparing two routes

Who trades

Independent TV specialist (Bountiful Cow, Medialab, JAA): Direct terms with sales houses
Group-owned agency (Zenith, OMD UK, Carat UK): Group investment desk, direct with sales houses
Full-service agency: Direct, or through a trading partner
In-house buyer with a partner: Uses the partner's terms

What you get

Independent TV specialist (Bountiful Cow, Medialab, JAA): Detailed spot work and fast copy turnaround
Group-owned agency (Zenith, OMD UK, Carat UK): Scale terms, one plan and one invoice across channels
Full-service agency: One plan and one invoice across channels
In-house buyer with a partner: Control of the plan

Where it can go wrong

Independent TV specialist (Bountiful Cow, Medialab, JAA): A narrow planning view, so the channel is judged in isolation
Group-owned agency (Zenith, OMD UK, Carat UK): Attention at spot level varies inside a large group deal
Full-service agency: Subcontracted airtime can carry an undisclosed margin
In-house buyer with a partner: Less price pressure, and limited bench depth

Put the same brief in front of each candidate and compare media buying agency proposals on the trading contacts they name, not on the channels they list.

Common questions

Can a small advertiser buy linear TV in the UK?

Yes, through an agency or a trading partner, though sales houses often set minimum spend levels for direct accounts. The practical limit is usually the cost of a commercial that passes clearance.

Is BVOD cheaper than linear TV?

Entry points are often lower and targeting is tighter, but cost per thousand impressions varies widely by service and time of year. Compare rates against the same audience definition rather than a headline figure.

Do national campaigns need a separate deal for Scotland?

Often yes. Channel 3 airtime in central and northern Scotland is sold by STV rather than ITV, so full UK coverage can mean two conversations. Confirm which regions a quoted plan actually includes.