Best Google Ads Agencies for Ecommerce: How to Shortlist in 2026

Last updated: 11 July 2026

Ecommerce Google Ads is a retail operating problem disguised as a media-buying problem. Product data, margin, stock, promotions, returns and landing pages all affect which revenue is worth buying. The agencies below were selected because their public evidence addresses at least part of that system, not simply because they offer generic PPC.

Disclosure: Upscale Digital publishes this article and may be included in the shortlist. Treat its inclusion as a commercial conflict and verify its claims with the same scrutiny applied to every other agency.

Methodology and limits

We prioritised first-party pages that discuss Shopping, feed management, retail data or ecommerce delivery. A generic Google Ads page was insufficient unless the agency’s own site also showed a relevant ecommerce proposition. We did not reproduce self-reported results as comparative scores because case-study periods, baselines and attribution methods are not standardised.

Upscale is included and publishes the comparison. The remaining shortlist introduces different operating models: an integrated performance agency, a retail specialist with proprietary feed/CSS services, a focused ecommerce PPC provider, a feed-led specialist and an integrated search agency.

Evidence-based shortlist

Upscale Digital

Published evidence: Luke Bright’s profile names ecommerce PPC, Google Shopping, PMax, conversion tracking and margin-led bidding as areas of focus. The founder-led structure may fit a retailer that already has merchandising and development support but wants senior Google Ads ownership.

Due-diligence focus: Have Upscale map one category from product economics to feed labels, campaign structure and reporting. Confirm who executes feed changes and what happens when work requires engineering or creative production.

Impression

Published evidence: Impression’s Shopping page explicitly describes feed optimisation, use of margin and stock data, creative support and retail-style reporting. This is strong public evidence for a retailer whose brief crosses campaign management, data and trading decisions.

Due-diligence focus: Ask whether the proposed team includes the feed, analytics and creative people described on the service page, and which deliverables carry separate fees.

Summit

Published evidence: Summit presents paid search as a retail specialism and lists Shopping, PMax, first-party data, profit optimisation, local inventory ads, attribution, its Productcaster CSS and FeedManager tooling. That makes it relevant to larger retail catalogues or omnichannel briefs.

Due-diligence focus: Proprietary tools create switching and data questions. Ask where transformed feed logic lives, what can be exported, how CSS economics are explained and what remains usable after termination.

DPOM

Published evidence: DPOM has a dedicated ecommerce and Google Shopping proposition aimed at UK online retailers. Its narrower offer may appeal to a growing store seeking managed Search and Shopping without a large integrated-agency structure.

Due-diligence focus: Request a live feed-audit exercise. Establish whether product-data changes are implemented, whether Merchant Center support includes policy issues, and how category profitability enters reporting.

Onefeed

Published evidence: Onefeed’s published proposition combines feed technology with Google Shopping management. A feed-led operating model is worth examining when catalogue hygiene, data transformation or multi-channel feed reuse is the main bottleneck.

Due-diligence focus: Ask whether media strategy is as deep as feed operations, who owns rules built in the platform and how the team evaluates PMax contribution beyond feed-level ROAS.

Found

Published evidence: Found lists PMax, feed optimisation and PPC alongside SEO, CRO and other search work. It can suit a retailer where product pages and organic visibility are part of the same commercial backlog.

Due-diligence focus: Ask the team to show how paid query or product data becomes a page, feed or SEO decision. The value lies in the handoff, not in buying several disconnected reports.

Use one category as a procurement test

Give every finalist the same anonymised category sample: product IDs, titles, price, cost or margin band, stock cover, return rate and twelve weeks of ad data. Ask for a 30-minute working session, not a free strategy document. You are testing how the team asks questions and handles conflicting signals.

A category reporting 500% ROAS can still destroy profit if discounts, returns and fulfilment costs are omitted. Conversely, a lower-ROAS category may introduce high-value repeat customers. The agency should state which economic value Google receives, which remains in analysis and what cannot be known from the current data.

Feed work also needs change control. A title test should identify the product set, original value, new pattern, expected effect and rollback route. Bulk edits without versioning can damage organic listings, marketplace feeds or compliance elsewhere.

Operating-model decision

Questions for the delivery team

Give the ecommerce delivery team a category extract, then ask:

1. Show how you would segment this sample category and why.
2. Who can publish feed changes, and where are those rules stored?
3. How do returns and gross margin change the value sent to Google?
4. Which products would you keep outside PMax?
5. How are price and availability mismatches detected?
6. Can reporting isolate new customers and brand demand?
7. What happens during a stock-out or flash promotion?
8. Which ecommerce work requires another supplier?

How to compare final proposals

For ecommerce, the statement of work should allocate feed, Merchant Center, trading-data, creative and media responsibilities. A service list without owners will recreate the same handoff gaps after appointment.

An ecommerce baseline should reconcile store orders, refunds, product costs and ad values. Keep Merchant Center, feed sources and analytics under retailer administration.

Worked procurement scenario

A retailer has £40,000 monthly media, 4,000 SKUs and reliable margin bands, but its feed is maintained manually and creative arrives quarterly. Impression or Summit may justify broader feed and creative resources; Upscale or DPOM may fit if the retailer hires separate feed support; Onefeed becomes relevant if transformation at scale is the main constraint. The deciding evidence is not the logo. It is a named owner for feed rules, an achievable asset cadence and a product-level value plan. Ask each finalist to price the missing work explicitly.

Sources

Ecommerce and Shopping evidence checked 11 July 2026; case studies and service pages remain first-party claims.

• Upscale Digital — cited first-party page
• Impression — cited first-party page
• Summit — cited first-party page
• DPOM — cited first-party page
• Onefeed — cited first-party page
• Found — cited first-party page
• Google product reporting
• Google Merchant Center issues