Google remarketing lists allow UK search advertisers to show tailored ads to previous website visitors when they return to Google. By combining remarketing audiences with search campaigns you can adjust bids and messaging for users who already know your brand, improving return on ad spend without relying solely on cold traffic.
This guide explains how to create effective audiences, apply bid adjustments and write creative that resonates with British users. The steps focus on practical implementation for early-stage e-commerce businesses operating in the UK market.
Understanding Remarketing Lists for Search Ads
Remarketing lists for search ads (RLSA) let you target people who have previously visited your website or used your app when they perform a relevant search on Google. Unlike display remarketing, these lists adjust search campaigns rather than showing banner ads.
In the UK, this approach works well for e-commerce sellers because many shoppers research products over several sessions. You can bid more aggressively for warm traffic or show different ad text that acknowledges their prior interest. Lists are built from website tags, customer data or app activity and must respect current Google policies and UK data protection rules.
Creating and Segmenting Audiences
Start by installing the Google tag on every page of your website or using Google Tag Manager. In Google Ads, navigate to Tools & Settings > Shared library > Audience manager. Choose to create a website visitors list and define the rules.
- All visitors: everyone who landed on the site in the past 30-540 days. Use this as a broad base.
- Product page visitors: people who viewed specific categories or items. Set the membership duration to 30-60 days for fashion or consumer goods.
- Cart abandoners: users who reached the add-to-cart or checkout page but did not complete a purchase. A 14-30 day window often works for UK retail.
- Previous purchasers: import customer match lists or create a list based on a thank-you or order confirmation page. These users usually convert at higher rates.
Combine lists with AND/OR logic to create tighter segments, for example "cart abandoners" who also viewed premium products. Test different time windows because British consumer behaviour varies by sector.
Applying Bid Adjustments for British Campaigns
Once lists are created, add them to your search campaigns or ad groups. In the campaign settings, go to Audiences and then select your remarketing list. You can set a bid adjustment from -90% to +900%, although most UK advertisers use +20% to +150% for warm audiences.
Reasoning example: if your average cost per click for cold traffic is £1.20 and previous visitors convert at twice the rate, a +40% adjustment raises the effective bid to £1.68. This helps your ad appear in higher positions for returning users without inflating costs across the entire account. For previous purchasers, some advertisers bid even higher on branded search terms because these users are likely to buy again.
Monitor the auction insights and search terms report after two weeks. If the adjustment drives too many low-value clicks, reduce it. Adjustments should reflect actual performance differences between new and returning visitors rather than arbitrary figures.
Creative Best Practices for UK Audiences
Write separate ad copy for each major list so the message matches the user’s stage. For cart abandoners, highlight urgency or a limited-time offer such as "Complete your order and get tracked 48-hour delivery." UK shoppers often respond to clear delivery information and honest pricing language.
Use ad customisers or responsive search ads with multiple headlines. Examples of effective headlines for remarketing:
- Back to your shortlist at Loom & Thread
- Finish your purchase – free UK shipping on orders over the current threshold
- Still thinking about the wool blend jumper? It’s still in stock
Avoid aggressive language. British users tend to prefer straightforward, helpful copy that respects their time. Include at least two or three unique descriptions that reference previous activity without sounding intrusive. Test one ad that focuses on product benefits and another that focuses on ease of checkout.
Observation vs Targeting and Negative Audiences
Choose Observation mode when you first add remarketing lists. This lets you gather data on how the audience performs without restricting who can see your ads. After collecting at least 1,000 impressions per list, switch high-performing segments to Targeting mode if you want to show ads only to those users for certain ad groups.
Create negative remarketing lists for users you want to exclude. For example, exclude recent purchasers from prospecting campaigns to avoid paying premium bids for people who have already bought. This keeps budgets focused on genuine growth rather than repeated exposure to the same customers.
Review audience overlap in the Audience manager. Large overlap between lists can distort performance data, so refine rules to keep segments distinct.
Measurement, Testing and Ongoing Management
Link Google Ads to Google Analytics 4 so you can see how remarketing audiences behave across sessions. Set up conversion tracking for micro-conversions such as newsletter sign-ups as well as purchases. Compare conversion rates and average order value between remarketing traffic and new users.
Run controlled tests by duplicating ad groups, applying different bid adjustments to the same list and measuring results over four to six weeks. Adjust membership durations seasonally – shorter in busy periods such as the run-up to Christmas when purchase intent decays faster.
Check the current Google Ads terms and UK data protection requirements regularly because rules on audience building and consent can change. Keep lists populated by maintaining consistent tracking across site updates.
Scaling Remarketing Within a Startup Environment
Early-stage UK founders and e-commerce sellers can use remarketing lists to stretch limited budgets by focusing spend on higher-intent traffic. The approach requires only basic Google Ads access and a correctly installed website tag. As the business grows, layer in customer match lists from email databases to create more precise audiences.
Businesses based at Loomworks in Liversedge benefit from mentoring that can help translate these tactics into sustainable growth without unnecessary spend. Keep testing and refining; small, consistent improvements to bid adjustments and creative often produce better long-term results than chasing the latest platform feature.
Frequently asked questions
How long does it take for a remarketing list to populate in Google Ads?
Lists typically need a few days of website traffic before they reach the minimum size to be used in search campaigns. High-traffic e-commerce sites may see usable lists within 48 hours while lower-traffic startups can wait one to two weeks. Google requires at least 100 active users for most remarketing lists to become eligible.
Can I use remarketing lists on branded search terms?
Yes. Many UK advertisers increase bids on branded keywords for previous visitors because these users often have higher conversion rates and lower cost per click. However, test the impact on overall account performance because over-bidding on brand terms can sometimes inflate costs without adding new revenue.
What bid adjustment should I start with for cart abandoners?
A starting adjustment of +30% to +60% is common for cart abandoners in UK search campaigns. The exact figure depends on how much more likely these users are to convert compared with cold traffic. Monitor the data after two weeks and adjust up or down based on actual cost per acquisition rather than guesswork.
Do I need separate campaigns for remarketing audiences?
Not necessarily. You can add audiences at campaign or ad-group level in existing search campaigns. Separate campaigns give more control over budgets and bid strategies but require more management time. Most early-stage businesses begin by layering audiences into current campaigns using observation mode.
How do UK data rules affect remarketing list creation?
You must follow current UK GDPR and PECR requirements when collecting and using visitor data. Always provide clear privacy information and obtain necessary consent where required. Rules change, so check the latest guidance on GOV.UK and Google’s advertising policies before scaling any audience strategy.
Related reading: How to build topical content clusters for SEO, Grow your LinkedIn company page as a UK startup, Mobile-first SEO best practices for UK businesses. Browse all marketing & growth guides or apply to Loomworks.