Switching Marketing Agencies: How to Leave Without Losing Your Accounts
Most businesses change marketing agency at some point, and usually for ordinary reasons: the account has outgrown them, the senior people who pitched have moved on, or results have plateaued. The switch itself is rarely the problem. The problems come from what nobody checked beforehand: an ad account that turns out to belong to the agency, years of analytics data in a property you cannot access, or a domain registered in someone else's name. This guide covers how to leave cleanly.
Decide Before You Announce
Before telling anyone, be sure the problem is the agency rather than the brief. If goals were never agreed in writing, or approvals routinely sat on your side for weeks, a new agency will inherit the same problems. Our guide to the first 90 days with an agency sets out what a healthy relationship looks like, which makes a useful checklist before you conclude this one has failed.
If you have raised specific problems in writing and given the agency a fair chance to fix them, it is time to plan the exit.
Read the Contract First
Three clauses matter:
- Notice period: one to three months is typical on a rolling retainer. On a fixed term, check whether leaving early means paying for the remaining months.
- Ownership of work: who owns the website code, designs, written content, ad creative and photography once invoices are paid. Most agencies assign it to the client, but not all, and some only do so on full payment.
- Handover obligations: whether the agency has to transfer accounts, files and documentation, and whether that work is billable.
Settle any disputed invoices before you give notice where you can. Handovers go far more smoothly when nobody is arguing about money.
Audit What You Actually Own
This is the step that saves the most pain. Before giving notice, log in to each of these yourself, using a company email address, and confirm you hold the highest level of access:
- Domain name and DNS: the registrar account should be in your company's name. Whoever controls DNS controls your website and your email.
- Website hosting and CMS: admin access to the site, the hosting account and any code repository, plus recent backups.
- Google Analytics and Search Console: administrator rights on the GA4 property and owner status in Search Console, so the reporting history stays with you.
- Google Tag Manager: publish rights on the container, otherwise tracking can quietly break after the agency leaves.
- Google Ads and Microsoft Ads: the ad account itself, not just a login to the agency's manager account. If the agency created the account under its own manager account, ask for admin access on your own login before anything changes.
- Meta, LinkedIn and other ad platforms: ad accounts, pixels and pages should sit in your own business manager, with the agency added as a partner rather than as the owner.
- Social profiles, email platform and CRM: owner or admin access on your side, with subscriber lists exported.
- Creative and reporting: source files for logos, designs and video, plus past reports and strategy documents.
Anything the agency set up under its own account needs transferring, not just sharing. If all you have is a user login, you can lose access the day the relationship ends.
Give Notice and Agree a Handover
Give notice in writing, and in the same message ask for a handover by a specific date: a list of every account they manage, confirmation that ownership sits with you, exported files, and a short document covering live campaigns, budgets, tracking and anything scheduled to run. A professional agency will treat this as routine. Stay courteous. You may want a reference from them, and the industry is smaller than it looks.
Overlap Old and New Where You Can
A short overlap is worth paying for. Two to four weeks with the outgoing agency still on the account lets the new team ask questions and check the tracking before anything is switched off. With paid media in particular, avoid pausing campaigns during the change, because restarting from a standstill throws away performance history and weeks of learning.
Protect Your SEO
If the switch comes with a new website or a platform change, organic traffic is what is most likely to suffer. Insist on a redirect map from every old URL to its new equivalent, keep your own Search Console access throughout, and benchmark rankings and traffic before launch so any drop is spotted quickly. Our guide to technical SEO explains why redirects and crawlability matter so much during a migration.
Brief the New Agency Honestly
Share what the last agency tried, what worked and what did not, including the uncomfortable parts. The new team will ask anyway, and it stops them repeating failed experiments at your expense. A clear written brief helps; our marketing brief template is a good place to start.
Finding the Next Agency
If you are still choosing a replacement, start with our guide on how to choose a digital marketing agency, then browse UK agencies by service and location and request quotes from a shortlist.