The short version
- A digital marketing agency runs SEO, paid ads, content and analytics, and should report on leads and revenue.
- UK retainers range from about £1,000 a month for one channel to £15,000 or more for full service.
- No one can honestly guarantee a first-place Google ranking, so treat that promise as a warning sign.
- Check case studies, account ownership and contract length before you sign.
A digital marketing agency plans, runs and reports on your online marketing: usually SEO, paid search, content, social media and analytics, with a named person accountable for results. This guide explains what those services involve, what they cost in the UK, and how to check an agency before you sign.
Most services fall into four groups. Search work brings in people who are already looking. Paid work buys visibility straight away. Content builds trust over months. Analytics shows which of the three is paying for itself.
The right mix depends on your sales cycle, your margins and how much budget you can commit for at least six months.
What does a digital marketing agency do?
A digital marketing agency manages the online channels that bring you enquiries or sales, and reports on what each one returns. Typical services are SEO, pay-per-click advertising, content marketing, social media, email and analytics. Good agencies start with your commercial goals, not with a list of tasks.
The agency should also own the plan, not just the execution. That means it tells you what to stop doing as well as what to start.
Core services and what each one is for
Search and AI search visibility
Search engine optimisation (SEO) improves how your pages rank in Google so that people with a clear need find you. Local SEO does the same for Google Business Profile and map results. Increasingly the work also covers answer engines such as Google AI Overviews and ChatGPT, which we cover under AI SEO.
Paid search and paid social
Pay-per-click (PPC) advertising puts you in front of buyers within days. It suits offers where you know your margin and can track a lead through to a sale. It stops delivering the day the budget stops.
Content, email and social
Content marketing answers the questions buyers ask before they contact anyone, which builds the experience and trust Google looks for. Email and social media management keep existing contacts warm.
Analytics and reporting
Tracking turns activity into evidence. Without correctly configured analytics and call or form tracking, no agency can tell you which pound produced which lead. You can see the full list of digital marketing services we offer.
Not sure where you rank?
We’ll check your map position, your Google profile and your listings, and send you what to fix first. Free, no obligation.
How much does a digital marketing agency cost in the UK?
UK agency retainers typically run from about £1,000 a month for focused SEO or PPC management to £3,500-£15,000 or more for a full-service programme. Scope, team seniority, competition in your market and whether ad spend is included drive the range. Always ask what the quote excludes.
These ranges come from one published UK guide, Whitehat SEO’s overview of what agencies do, which lists SEO at £1,000-£5,000, PPC management at £1,000-£3,000 plus ad spend and content at £1,200-£6,000 a month. Treat them as a guide, not a quote.
| Service | Typical UK monthly range | What moves the price |
|---|---|---|
| SEO | £1,000-£5,000 | Site size, competition, content volume |
| PPC management | £1,000-£3,000 plus ad spend | Number of campaigns and platforms |
| Content marketing | £1,200-£6,000 | Posts per month, research depth, design |
| Full-service programme | £3,500-£15,000+ | Channels combined, reporting, strategy time |
For wider context on how fees differ between countries, see our comparison of SEO pricing in Europe.
What should you look for in a digital marketing agency?
Look for named case studies in your sector, a clear definition of success, reporting tied to enquiries or revenue, and full ownership of your ad accounts and data. Ask who will actually do the work. A senior pitch followed by a junior team is common.
Proof that fits your market
Ask for case studies with the numbers and the time frame, and call a reference. Agencies that specialise in one or two channels are often safer than ones that claim to do everything, a view shared by UK guides such as Koozai’s guide to choosing an agency.
Technical competence
Check that the agency understands Core Web Vitals, schema markup and how AI search tools pick sources. Ask them to show you something on your own site, not a slide.
Reporting you can act on
Reports should lead with leads, cost per lead and revenue, then explain traffic. If a report is mostly impressions and rankings, the agency is measuring its own activity.
Does Google Partner status matter?
Google Partner status shows that an agency meets Google’s minimum bar for managing Google Ads, but it does not prove the agency suits your business. To hold the badge, Google requires a manager account optimisation score of at least 70%, $10,000 USD of ad spend over 90 days and certified account strategists.
Google sets these thresholds on its help page, How to become a Google Partner or Premier Partner. It requires at least 50% of account strategists to hold Google Ads certification. Treat the badge as a basic filter, then judge the agency on its results and references.
When should you hire an agency instead of working in-house?
Hire an agency when you need several skills part-time, such as SEO, paid media and analytics, and cannot justify full-time salaries for each. Work in-house when marketing is central to your product and you can hire and manage the specialists yourself. Many firms split the two.
Google itself advises that a great time to hire an SEO is during a site redesign, the earlier the better, because search needs are cheaper to build in than to retrofit.
Our guide to what to keep in-house and what to outsource works through that decision in more detail.
Working with an agency abroad
Some UK companies hire a team based in another country to cover the same services for less. This can work well if the team writes natural English, understands UK platforms and reports in your time zone. LineUp is based in Wrocław, Poland, and works with clients in Poland, Germany, France, the UK and Turkey.
From our work: The pattern we see most often is a business that bought several services at once and cannot tell which one works. We usually start with tracking and local search, because they are cheap to fix and show results early. Our published case studies, such as a Berlin café’s first website, show how that sequence plays out on a small budget.
If you are comparing options in Poland, read what UK and German companies should check before you hire.
Frequently asked questions
Paid search can generate enquiries within days of launch, though it usually needs a few weeks of tuning. SEO and content typically take three to six months to show steady movement. Ask the agency for a 30 to 90 day plan so you can judge early progress.
An SEO agency focuses on organic search visibility. A digital marketing agency covers several channels, such as paid ads, content, social and email, alongside SEO. A specialist often goes deeper on one channel, while a broader agency coordinates several of them under one plan.
Prefer a short initial term, such as three to six months, with a clear notice period afterwards. Avoid contracts that lock you in for a year without a review point. Make sure you own your ad accounts, analytics and website access from the start.
No honest agency can. Google says nobody can guarantee a number one ranking, and results depend on many factors outside an agency’s control. An agency can commit to a process, reporting and agreed targets for activity and cost, but results depend on competition, your offer and your website.
Know your target customer, your average sale value, your current enquiry numbers and your monthly budget range. Give the agency access to analytics and ad accounts if you have them. A clear brief gets you a more accurate quote and a plan you can compare.
Talk to us about your marketing
If you want a plain assessment of your current search, ads and tracking, contact LineUp and we will tell you what to fix first.
Search, ads and video for businesses that want more customers. Every guide is based on what we see in client accounts. See our services
