How to read a UK digital marketing agency proposal: 7 red flags and 5 green flags

Agency proposals are designed to look impressive. The deck is well-designed, the case studies are flattering, the pricing slide is mercifully near the back. The problem is that most of the information that actually matters — what you’ll get each month, who’ll be doing the work, what happens if it doesn’t work — is rarely on the page.

This is a checklist we’d give a friend who’s about to commission their first agency. It works equally well for SEO, PPC, content, social and AEO retainers.

The 7 red flags

1. Deliverables aren’t quantified per month

A proposal that says “ongoing SEO optimisation” or “content production” without specifying how many pieces, how many hours, or how many deliverables per month is a proposal you can’t hold the agency to. The fee can stay the same while the work shrinks.

Ask for the per-deliverable breakdown before you sign. If they can’t produce one, walk.

2. The senior person on the deck never appears in the contract

Pitches are sold by the founder or strategy director. Delivery is often done by junior account executives. If the proposal names senior people, the contract should specify minimum hours per month of those senior people on your account — otherwise you’re paying for the pitch, not the work.

3. “Performance guarantees” without attribution clarity

A guarantee of “30% traffic uplift in six months” sounds great. Then you discover the agency measures success against a baseline they pick, attribute every conversion to themselves, and the bonus structure rewards activity over revenue. Performance bonuses only make sense when:

The baseline is agreed in writing before work starts
Attribution is single-touch, multi-touch is auditable, and source-of-truth is your analytics, not theirs
The downside is symmetrical — fees go down as well as up

4. PPC ad spend bundled into the management fee

If a PPC proposal quotes one figure that includes ad spend, you’re losing visibility into both. Ad spend should always be paid directly to the platform (Google, Meta, LinkedIn) by you, with the agency invoicing only for management. Anything else means the agency is profiting from spend creep.

For a sense of what management-only fees should look like for your scope, our PPC calculator gives an indicative range based on channels, spend band and SKU count.

5. The reporting cadence is “monthly” with no detail

“Monthly reporting” can mean anything from a 30-page slide deck delivered on the 5th to a one-line email saying “we’re still working on it.” A good proposal specifies:

What metrics will be in the report
The exact day of the month it lands
A standing 30-minute review call with someone senior

6. Long minimum terms with vague exit rights

UK agency contracts often run 12 months. That’s defensible — content and SEO take time. What’s not defensible is a 12-month term with a 90-day notice period and a for cause only exit clause. Look for:

30 days notice from month four onwards
Asset ownership — all content, briefs, scripts, footage and account access stay with you on exit
Pro-rata refunds for prepaid periods

7. Vague language around AI and AEO

If a 2026 proposal doesn’t mention AEO, AI search, or how the agency thinks about generative answer engines, that’s not a sign they’re focused on fundamentals — it’s a sign they haven’t thought about it. Ask directly: what’s your view on AI search, and how does your delivery account for it?

The 5 green flags

1. They quote a range, not a single figure

Honest pricing is a range, because the work is variable. A proposal that says £3,500–£5,000/mo depending on Q1 keyword research output shows the agency is thinking about scope, not just selling a number.

2. They reference industry benchmarks

Agencies that compare their proposal against published UK retainer benchmarks aren’t worried about being compared. The ones that flinch when you mention benchmarking usually have something to hide.

If you want a quick benchmark for your own brief, run it through the calculator — it returns a typical UK range in under a minute.

3. Senior people show up to the kickoff and the quarterly reviews

Not just the pitch. A proposal that explicitly schedules the strategy director for the kickoff, the QBRs and the annual planning is signalling continuity.

4. They tell you what they won’t do

A proposal that lists out-of-scope items alongside in-scope ones is far stronger than one that lists only in-scope. It means the agency has thought about edge cases and is being honest about boundaries.

5. The case studies have downside data

Anyone can show traffic-up screenshots. Strong agencies show case studies where they explain what didn’t work, what they changed, and what the lesson was. That’s evidence of genuine learning, not pitch-curation.

A simple structure for your own RFP

If you’re sending a brief to multiple agencies, structuring it well saves everyone time:

Business context — who you are, what you sell, who buys it
The problem — what’s not working today, in metrics
Scope — channels you want help on, channels you don’t
Scale signals — site size, ad spend band, content volume, SKUs
Budget range — yes, share it; agencies who refuse to quote unless you do are being honest about their pricing model
Timing — when you want to start, when you’ll decide
What you want in the response — pricing breakdown, named team members, three relevant case studies, references

That last point matters. If every response uses your structure, comparing them takes an afternoon, not a week.

Closing the loop

The proposal is the start of a conversation, not the end of one. The agencies you’ll be happiest with twelve months in are the ones that pushed back on something in your brief — corrected an assumption, queried a metric, or quoted lower than expected because they found a simpler way. The ones that just say yes to everything are the ones that quietly run scope creep when the contract starts.

Good luck. And if you’d like to ground-truth any of the figures you’re seeing, the calculator is there for the comparison.