The short answer
A marketing agency retainer should name seven things: the work, the units of output behind it, the delivery hours, who holds the advertising and analytics accounts, who owns what is produced, how personal data is handled, and how the agreement ends. Most published UK retainer packages name only the first. Everything after it is settled in the contract, or argued about in month four.
Key takeaways
- A list of services is not a scope. Nine categories with no numbers against them describes an agency, not a month of work.
- Seven lines decide it: the work, the units, the hours, the access, the assets, the data and the exit.
- Where a package publishes hours, divide. Mooch Creative publishes 20 hours at £2,000 and 60 at £6,000, a flat £100 an hour at both ends.
- Article 28(3) of the General Data Protection Regulation puts eight specified terms inside the agreement wherever the agency handles client data, and the duty to have them there is your firm's.
- Copyright in what the agency creates stays with the agency until it is assigned in writing and signed, under section 90(3) of the Copyright, Designs and Patents Act 1988.
Fenti, a UK agency, publishes a list of what a marketing retainer includes: strategy and planning, design, copywriting, social media management, paid advert management, search support, website updates, reporting, and ongoing advice. Nine categories, and not one number anywhere on the page.
That is the standard shape and it is not dishonest. It is how retainers are sold, because in August the agency does not know what the firm will need in November, and neither does the firm. Two quotes at £2,400 a month listing the same nine categories cannot be compared on anything, and the partner signing one has no basis for saying which is better value.
The fix is not a longer list of services. It is a short set of lines that turn a category into something checkable: a unit, an hour, a name on an account, a signature on an assignment.
A list of services is not a scope
The categories on a retainer page describe what the agency is able to do, not what your firm has bought. “Social media management” is satisfied by four posts a month and by forty, and “search support” by a quarterly audit nobody acts on. Neither statement is a lie, and neither is a commitment.
It is the same defect that makes published price ranges useless: a number with no scope behind it is not a price, and a scope with no units in it is not a scope.
The seven lines that turn a retainer into a scope
Each line has a version that appears in most proposals and a version that can be checked in month six. Most UK agencies will agree to all seven before signature, and to none of them afterwards.
The work
“Social media management”
The channels named, and one sentence on what sits outside the fee.
The units
“Regular content”
A count each month, and how many rounds of revision a unit carries.
The hours
Absent from the page
Delivery hours stated, with account management and reporting shown separately.
The access
“We manage your accounts”
Advertising, analytics, email and domain accounts opened in the firm's name, agency added as a user.
The assets
“All work is yours”
A signed assignment of copyright, naming what it covers and when it takes effect.
The data
“Fully compliant”
A written processing schedule carrying the eight terms Article 28(3) specifies.
The exit
“Twelve month term”
Notice period, what is handed back, and in what format.
Divide the fee by the hours, because that is the comparable number
Where a package publishes both a fee and the hours behind it, the implied rate is usually flat, and the tiers differ in volume rather than in seniority. Mooch Creative publishes 20 hours a month at £2,000 plus VAT and 60 hours at £6,000. Both work out at £100 an hour, so moving up a tier buys more of the same thing rather than more senior people.
The division also exposes what the headline hides. Account management and reporting sit inside the hours rather than beside them, so if a fifth of the allocation goes there, £2,000 buys 16 delivery hours and the effective rate is £125. A retainer that publishes no hours cannot be divided at all, and an undividable fee behaves the same way as any supplier price that will not resolve into a run rate.
Before you sign a twelve month term
Send us the scope and we will tell you which lines are missing.
Free to your firm. The agency pays us, and only if the relationship works, so telling you a scope is thin costs us money.
Get a recommendationThe data clause is eight terms long, and the duty is your firm's
Wherever a marketing agency handles your client list, your firm is the controller and the agency is the processor, and Article 28(3) of the UK General Data Protection Regulation requires a written contract carrying eight specified terms. Beyond describing the processing itself, it has to bind the processor on documented instructions, confidentiality, security, sub-processors, assisting with individual rights, assisting with breach and assessment duties, deletion or return at the end, and audit. Article 28(9) requires it in writing, including in electronic form.
The part that catches firms out is where the obligation sits. The Information Commissioner's Office puts the requirement on the controller, which is the practice, not the agency it hired. A missing clause is your firm's failure to fix, at your firm's cost. Ask for the processing schedule before signature. An agency that produces one inside a day has been asked before. An agency that offers to add a data protection line to the proposal has not, and that answer is worth more than the document would have been.
What you own at the end, and the clause that lets them change what you get
Copyright in work an agency creates belongs to the agency, and section 90(3) of the Copyright, Designs and Patents Act 1988 provides that an assignment is not effective unless it is in writing signed by or on behalf of the assignor. “All work is yours” in a proposal describes an intention. What transfers ownership is a signed assignment naming what it covers.
The looser problem is the scope clause itself. Where an agency contracts on its written standard terms of business, section 3(2)(b) of the Unfair Contract Terms Act 1977 means a term entitling it to render a performance substantially different from what was reasonably expected, or none at all, binds only so far as it is reasonable. It is a genuine protection and a slow one, because reasonableness is decided by a court rather than by a partner in month four.
Usually silent
Questions a standard retainer does not answer.
- Who holds the advertising account when the term ends.
- How many revision rounds a deliverable carries.
- Whether unused hours roll into the following month.
- What happens to scheduled work during the notice period.
- Whether the agency may substitute a different service.
Fixed by one sentence
What to add, in the agreement rather than the proposal.
- Accounts are opened in the firm's name, agency added as a user.
- Copyright in delivered work is assigned on payment of the invoice covering it.
- Personal data is processed only on the firm's documented instructions.
- On notice, all accounts, files, credentials and scheduled work are returned in an editable format.
When a professional services firm should not sign a retainer yet
Two situations make a monthly fee the wrong instrument, and neither is about the agency.
- Nobody inside the practice can approve work weekly. A retainer bills whether or not the firm responds, and a partner with a full diary in October pays for a month that produced two approvals and a reminder. Name the approver before signature
- The work has an end date. A build or a migration is a fixed scope, and a website is the clearest case of a job that should be priced as a project. A retainer turns it into a standing cost that outlives the reason for it
We are paid by the agency, so a page that talks a managing partner out of a monthly fee costs us money. What we assess before recommending anybody, including the cases where we decline to introduce anyone, is set out on our page for professional services firms.
Frequently asked questions
What firms ask us about retainer scope.
What should a marketing agency retainer include?
Seven lines: the work, the units of output behind it, the delivery hours, who holds the advertising and analytics accounts, who owns what is produced, how personal data is handled, and how the agreement ends. A list of service categories with no numbers against it describes the agency rather than the month you are buying.
How many hours should a marketing retainer include?
There is no benchmark worth holding a supplier to, because published packages that state hours are rare. Ask for the number in writing and divide the fee by it. If the agency will not put an hours figure in the agreement, the fee cannot be compared with any other quote.
Do I own the work my agency produces on a retainer?
Not automatically. Copyright in work created by an agency belongs to the agency, and section 90(3) of the Copyright, Designs and Patents Act 1988 provides that an assignment is not effective unless it is in writing and signed by the assignor. A proposal saying all work is yours is not an assignment.
Does a marketing agency need a data processing agreement?
Yes, wherever it handles personal data on your instructions. An agency running email campaigns for a UK firm is a processor, and Article 28(3) requires a written contract carrying eight specified terms. The obligation to have that contract in place rests with your firm, not the agency.
Is a retainer better than paying per project?
A retainer suits work that genuinely continues month after month, such as search and campaign management. Anything with an end date, such as a website build, is a project with a fixed scope, and putting it on a monthly fee converts a finite job into a standing cost.
Sources and useful reading
- Article 28 of the General Data Protection Regulation, as retained in domestic law. Paragraph 3 for the eight terms, paragraph 9 for the writing requirement.
- Information Commissioner's Office, what needs to be included in the contract, on the controller's obligation and the sub-processor terms.
- Copyright, Designs and Patents Act 1988, section 90. Subsection (3) on assignment in writing signed by the assignor.
- Unfair Contract Terms Act 1977, section 3, which applies where one party deals on the other's written standard terms of business.
- Mooch Creative, published retainer packages and Fenti, what is a marketing retainer, both read as published asking prices, not as market evidence.
This article is commercial decision support, not legal or regulatory advice. Supplier pages were read on 4 September 2026. The hourly figures are arithmetic on published prices.