Most people who visit a website leave without enquiring or buying. Some were only browsing, but many were comparing options, got interrupted or wanted to think it over. Google Ads remarketing lets you show ads to those people again, and to existing customers, while they search on Google, watch YouTube or browse sites in Google’s network. I plan and set up remarketing as one part of a wider Google Ads service for UK businesses, with consent handled properly from the start.
What remarketing changes in an account
Someone who has already seen your prices, read your service page or added a product to the basket is a different prospect from a stranger. Remarketing lets the account treat them differently: a higher bid when they search again, a reminder on YouTube after a quote request, or an ad for the exact product they left behind. Used with care, it shortens the path for people who were already close to deciding.
It also works in the other direction. The same lists can stop you paying to show acquisition ads to existing customers, or to people who converted yesterday. On an account with a large customer base, getting those exclusions right can matter as much as the remarketing campaigns themselves.
What remarketing cannot do is create demand. If the site is slow, the offer is unclear or the landing page does not answer the obvious questions, chasing visitors around the internet only repeats a weak pitch. I check the destination pages first, and where they are the real problem I say so, or point you to landing pages built for paid traffic.
Who it suits, and who it does not
Remarketing tends to earn its place for:
- Online shops with a product feed, where people browse, compare and come back before buying.
- Service businesses with a considered purchase, such as kitchen fitters, private clinics, solicitors and B2B suppliers, where the decision takes days or weeks.
- Businesses with a customer list who want to sell again to past buyers or keep them out of prospecting campaigns.
It is usually a poor first spend for a site with very little traffic, because the lists stay too small for Google to serve ads to, and for emergency services such as a locksmith, where the customer has already chosen someone by the time an ad could reach them. In both cases the budget does more in search campaigns that reach people at the moment they look.
The ways I use remarketing
Remarketing lists in Search
Remarketing lists for search ads (RLSA) apply your visitor lists to Search campaigns. On manual or enhanced bidding, I can raise bids for returning visitors or show them different ad copy. On Smart Bidding, Google already uses audience membership as a signal and ignores most manual adjustments, so I add the lists in observation mode for reporting and use them to separate brand and generic performance. This is often the most useful form of remarketing for a service business, because it only spends when the person is actively searching again.
Display, YouTube and Demand Gen
These reach people when they are not searching. They suit longer decisions and shops with repeat purchases, and they need a frequency cap so nobody sees the same ad a dozen times a day. For a retailer, dynamic remarketing pulls products from the Merchant Center feed so the ad shows the item the person viewed. For video, I use YouTube campaigns with lists of site visitors and channel viewers.
Performance Max
Performance Max campaigns remarket automatically, and they lean heavily on warm audiences unless told otherwise. Your lists act as signals rather than strict targeting. My concern there is usually the opposite of building more remarketing: making sure the campaign is not claiming credit for sales from people who were already on their way back.
Customer Match
Customer Match lets you upload email addresses or phone numbers of existing customers, which Google hashes and matches to signed-in users. I use it to exclude current customers from acquisition campaigns, to promote renewals or new ranges to past buyers, and as a signal for Performance Max. Google sets eligibility requirements for the account before it can be used.
Consent comes first in the UK
Adding someone to a remarketing list relies on an advertising cookie or similar identifier on their device. Under regulation 6 of PECR, that needs the visitor’s consent, because it is not strictly necessary for the site to work. Google’s EU user consent policy also applies to users in the UK, and makes consent for ads personalisation your responsibility as the advertiser.
In practice, I make sure the Google tag only adds people to lists after they accept marketing cookies in your banner, and that Consent Mode passes the ad_storage, ad_user_data and ad_personalization signals correctly. If someone declines, they are not added. Your lists will therefore be smaller than the raw visitor numbers, which is expected and correct. A setup that remarkets to everyone regardless of their banner choice is a compliance problem, and I will not build one.
Customer Match is not a cookie, but it is still a use of personal data under UK GDPR. You need a lawful basis for uploading customer details to Google, your privacy notice must tell customers you do it, and anyone who has objected to direct marketing must be removed before each upload. The ICO’s direct marketing guidance treats this kind of list-based ad targeting as direct marketing, so I ask how the list was collected before using it.
How I run the work
- Check the foundations. I confirm the Google tag is installed once, consent is respected, conversion tracking records real enquiries and sales, and Google Analytics 4 is linked if you want to use its audiences.
- Plan the lists. Lists follow intent, not page count: product or service viewers, basket or form abandoners, quote requesters, recent customers and lapsed customers, each with a sensible membership length. Google allows up to 540 days, but a short decision cycle usually needs far less.
- Set exclusions. Converters and current customers come out of campaigns that are trying to win new ones.
- Decide where each list is used. Search, YouTube, Display, Demand Gen or Performance Max, depending on your sales cycle and budget.
- Write the ads. Remarketing copy acknowledges that the person has met you before: answering an objection, showing a review, or reminding them what they looked at.
- Review and adjust. I check list sizes, frequency and whether remarketing is adding sales or only taking credit for them.
Problems I see most often on UK accounts
- Remarketing tags that fire before the cookie banner is answered, or ignore a refusal entirely.
- One list of “all visitors over 540 days” doing the work of five, so a careers-page visitor sees the same ad as someone who abandoned checkout.
- No frequency cap on Display, leading to irritated prospects and wasted impressions.
- Recent buyers still being shown ads for the product they just bought.
- Lists set up but never applied, or applied to a campaign that has since been paused.
- Remarketing in sensitive areas. Google’s personalised advertising policy restricts targeting based on health, financial hardship and other sensitive categories, which affects clinics, debt advice and some legal services.
Facebook and Instagram run their own version with different rules and tools. If you want visitors followed up there too, I cover that under Facebook and Instagram retargeting.
What you receive
- A written audience plan: each list, its rule, membership length, size and where it is used.
- Confirmation that tags respect consent, with the test steps I used.
- Exclusion lists applied to the campaigns that need them.
- Remarketing ad copy and creative briefs for each placement.
- A short report after the first weeks showing list growth, frequency and what remarketing contributed.
Cost and next step
Remarketing can be set up as part of monthly PPC management or as a one-off piece of work. Each quote is written after a free first call, in GBP, and agreed in writing before work starts. If you already run Google Ads and suspect your lists are missing or misconfigured, send me a note about your account and I will tell you what I would check first.