Updated on 9 November 2026 by Nicolas Finet, CEO of Sortlist. This guide has been rewritten for UK advertisers in 2026: it explains media planning versus media buying, the paid, owned, earned and shared media framework, the steps of a plan, how UK digital ad spend is shaping choices (IAB UK and mediasense forecasts) and what ISBA's guidance on agency "proprietary media" means for transparency.
Media planning decides where, when and how often your message appears so that it reaches the right people at a cost that makes sense. Good plans start with the audience and the goal, not the channel. This guide covers the essentials.
Key takeaways
- A media plan sets objectives, audience, channels, budget, timing and measurement. Planning decides what to buy; buying executes the purchase.
- UK digital advertising reached £21.2 billion in the first half of 2026, up 13%, and mediasense forecasts £45.2 billion for the year; retail media and video are among the fastest growing areas.
- Ask agencies how media is bought: ISBA published guidance in 2026 on proprietary (principal-based) media, where an agency resells inventory it has bought, rather than acting as an agent at cost.
What is a media plan?
A media plan is a document that sets out how a campaign will reach its audience: the goals, the target audience, the media channels, the budget for each, the schedule, the formats and how success will be measured. It connects the creative idea to the media where people will see it.
Types of media
| Type | What it is | Examples |
|---|---|---|
| Paid media | Channels you pay to use | Search ads, social ads, TV, radio, out-of-home, display, sponsorships |
| Owned media | Channels you control | Website, blog, email, app, social profiles, podcasts |
| Earned media | Coverage and mentions you earn | Press coverage, reviews, word of mouth, backlinks |
| Shared media | Social engagement and sharing | Comments, shares, user-generated content |
The PESO model (paid, earned, shared, owned), developed by Gini Dietrich, helps plan how these types overlap and support each other. A strong plan uses paid media to amplify content, earned media to build trust, shared media to extend reach and owned media to convert and retain.
Benefits of a media plan
- Spend is allocated deliberately, not by habit.
- Channels work together instead of competing.
- Reach and frequency are balanced.
- Results can be measured against clear goals.
- It shows where to cut, increase or test.
What is media planning, and what are its objectives?
Media planning is the process of choosing the media mix, the timing and the budget for reaching a target audience. Typical objectives include:
- Reach: how many different people see your message.
- Frequency: how many times each person sees it.
- Awareness and consideration: brand recall and preference.
- Response: clicks, sign-ups, calls and sales.
- Efficiency: cost per thousand, cost per click, cost per acquisition.
Media planning vs media buying
| Criteria | Media planning | Media buying |
|---|---|---|
| Question | Where and how should we reach the audience? | How do we purchase it at the best price? |
| Work | Research, strategy, channel mix, budget split | Negotiating, booking, trading, optimising |
| Output | Media plan | Bookings, insertion orders, live campaigns |
“Proprietary media, also known as principal-based, inventory or outcome-based media, involves media agencies buying media inventory, often in bulk, and reselling it to clients at a higher rate.”
Marketing Week, ISBA proprietary media guidance (February 2026)
This differs from standard media buying, where the agency buys on the client's behalf and passes media cost through transparently, with a commission or retainer on top. Proprietary media can offer deals but creates a potential conflict of interest. ISBA's guidance (2026) helps advertisers make decisions: ask whether your agency uses proprietary media, how it is priced, how performance is measured and what disclosure you receive.
Key elements of media planning
- Objectives: measurable goals tied to the business.
- Audience: who they are, where they spend time and what media they trust.
- Message and creative: what you will say and how it works in each format.
- Channels: where to reach them.
- Budget: total and split by channel and period.
- Timing: flighting, seasonality and campaign length.
- Measurement: metrics, tracking and reporting.
The steps in media planning
1. Analyse the market and the audience
Use research, customer data and tools such as geodemographic segments to understand who you want to reach. Review competitor activity and category seasonality.
2. Set objectives and KPIs
For example: "reach 60% of target households at least three times, and generate 500 leads at under £30 each".
3. Choose the media mix
Consider the strengths of each medium. The UK market is increasingly digital: IAB UK and mediasense report £21.2 billion of digital advertising in the first half of 2026, up 13% on the year, with retail media up 32% and video up 18%. Mediasense estimates digital spend will grow 12% across 2026 to £45.2 billion and reach £50 billion in 2027. Broadcast and out-of-home still play important roles for reach. See TV advert costs, radio advertising, out-of-home advertising and search engine advertising.
4. Set the budget
Work from goals and efficiency data, and keep a reserve to scale what works. Avoid spreading money too thinly: enough reach and frequency in each channel matter more than presence everywhere.
5. Plan the schedule
Decide when to run: continuous, bursts or pulses. Allow for lead times, clearance and learning phases.
6. Buy and book
Negotiate rates, book placements and set up campaigns, with brand safety and verification in place.
7. Monitor and optimise
Review performance regularly, move money to what works and refresh creative.
8. Report and learn
Compare results with objectives and record lessons. Where possible, use incrementality tests or marketing mix modelling to show what the media caused. See how to create an advertising campaign.
Challenges of media planning
- Fragmented audiences: people use many platforms, so cross-media measurement is hard.
- Privacy and measurement: consent rules and browser changes reduce tracking.
- Transparency: fees, rebates and proprietary media can obscure what you pay for.
- Brand safety and invalid traffic: ads may appear in unsuitable or fraudulent environments.
- Creative fatigue: frequency without variety reduces response.
- Attribution: platforms credit themselves; use independent measures.
Working with a media agency
Agencies bring buying power, data and planning skills. Ask about their fee structure, whether they use principal-based media, what transparency you will get, who owns the data and accounts and how results are measured. See why you need a digital advertising agency and how to hire an agency.
Frequently asked questions about media planning
What is a media plan?
A document setting out the goals, audience, channels, budget, schedule and measurement for a campaign.
What is the difference between media planning and media buying?
Planning decides which media to use and when; buying negotiates and purchases it.
What is paid, owned, earned and shared media?
Paid is advertising you buy; owned is channels you control; earned is coverage you gain; shared is social engagement and sharing.
How much of UK advertising is digital?
UK digital ad spend reached £21.2 billion in the first half of 2026, according to IAB UK and mediasense, with full-year spend forecast at £45.2 billion.
What is proprietary media?
Media that an agency buys in bulk and resells to clients, rather than buying as a transparent agent. ISBA published guidance on it in 2026.
How do I measure media plan success?
Track reach, frequency, cost efficiency and business outcomes, and use incrementality tests to see what the plan caused.
Need a media plan? Post your project on Sortlist and compare UK media agencies for free.
Sources: IAB UK, digital adspend H1 2026, mediasense, adspend forecast, Marketing Week, ISBA proprietary media guidance, Baden Bower, PESO model. Forecasts are estimates.
