DV360 Resellers in London: How to Choose the Right Partner
A practical guide to working with DV360 resellers in London — how reseller access works, what to look for in a partner, and how to match an engagement model to your team.
DV360 Resellers in London: What They Actually Do
Display & Video 360 (DV360) is Google's enterprise demand-side platform, and access to it isn't handed out on a self-signup basis. Most teams reach the platform through a partner — and in a dense media market like London, that usually means a DV360 reseller. Understanding what a reseller provides, how the commercial relationship works, and how to separate a genuine partner from a middleman is the difference between a smooth programmatic operation and a frustrating one.
This guide is written for marketing leaders, in-house media teams and performance agencies in London who are evaluating how to buy on DV360. It covers the mechanics of reseller access, the questions worth asking, and the engagement models available so you can match one to your maturity and resourcing.
Why you need a reseller or partner in the first place
Google grants DV360 access through the Google Marketing Platform partner ecosystem. Unless your organisation is large enough to hold a direct contract, you'll typically operate under a partner's DV360 organisation. A reseller effectively provides:
- Platform access — a seat, billing infrastructure and technical provisioning.
- Commercial cover — consolidated invoicing and media credit so you aren't fronting spend directly to Google.
- Onboarding and support — trafficking setup, inventory access, and troubleshooting.
- Optional expertise — strategy, campaign management and optimisation where you don't have it in-house.
The term "reseller" is often used loosely. Some firms simply pass through platform access with a markup; others deliver a full managed service. Knowing which you're buying matters enormously.
Types of DV360 Partners in London
London has one of the deepest concentrations of programmatic talent in Europe, so you'll encounter several partner archetypes. They broadly fall into these categories:
| Partner type | What they provide | Best suited to |
|---|---|---|
| Pure reseller | Platform access, billing, minimal support | Teams with strong in-house traders needing only a seat |
| Self-serve provider | Access plus onboarding and light support | Experienced teams who want control but need a compliant seat |
| Co-managed partner | Shared operations — you run some campaigns, they support others | Teams building capability who need a safety net |
| Full managed service | End-to-end strategy, buying and reporting | Brands and agencies without dedicated DV360 traders |
At DV360.co we offer these as distinct engagement models rather than a one-size-fits-all package. You can explore the differences across our DV360 self-serve account, co-managed services and managed services options.
Reseller vs. Google Marketing Platform Partner
One important distinction: being a recognised Google Marketing Platform partner signals a level of vetting, certification and platform relationship that a generic reseller may not have. When you evaluate providers, ask directly about their partner status and the depth of their relationship with Google. A credentialed DV360 partner account gives you a more resilient setup than an anonymous seat sublet from a third party.
What to Look for in a London DV360 Reseller
Because the market is crowded, a structured checklist keeps your evaluation objective. Focus on substance over sales polish.
1. Transparency on access and ownership
- Will you have named user access to the DV360 interface, or is everything hidden behind the reseller?
- Who owns the advertiser and campaign data if the relationship ends?
- Can you export your audience lists, creatives and historical performance data cleanly?
Data portability is one of the most overlooked issues. A good partner makes offboarding as straightforward as onboarding.
2. Fee structure clarity
Reseller economics vary. Some charge a percentage of media, some a flat platform fee, some a blended management rate. None of these are inherently wrong — but they should be stated plainly. Avoid arrangements where the margin is opaque or where you can't reconcile media spend against platform costs. Our approach to transparent commercials is outlined on the pricing page.
3. Technical and strategic depth
Access alone rarely drives performance. Assess whether the partner can actually help with:
- Audience strategy and first-party data activation
- Inventory and deal curation, including PMP and programmatic guaranteed
- Connected TV and YouTube buying
- Brand safety and verification configuration
- Measurement, attribution and reporting
Even if you plan to run campaigns yourself, a partner with genuine depth is a valuable escalation point.
4. Support model and responsiveness
Programmatic issues rarely respect office hours. Clarify response times, whether you get a named contact, and how platform incidents or billing queries are handled. A London-based team working in your timezone is a practical advantage for fast-moving campaigns.
5. Compliance and brand safety posture
Reputable partners take inventory quality, fraud prevention and privacy compliance seriously. Ask how they configure verification, manage exclusion lists, and handle consent and data-processing obligations under UK and EU rules.
Matching the Engagement Model to Your Team
The right structure depends less on your company's size and more on your in-house capability and appetite for control.
If you have experienced traders
A self-serve seat is usually the most efficient choice. You retain full control of buying decisions while the partner handles access, billing and platform-level support. This keeps your operational costs lean and your team hands-on.
If you're building capability
Co-managed services bridge the gap. Your team runs day-to-day activity while the partner provides strategic oversight, QA and specialist support for complex tactics like CTV or advanced audience work. It's an effective way to upskill without carrying full risk.
If you want outcomes, not operations
Full managed services suit brands and agencies that would rather buy expertise than build it. The partner owns setup, trafficking, optimisation and reporting against agreed KPIs, and you focus on strategy and results.
If you're unsure which fits, our team can walk you through the trade-offs — start with an overview of all DV360 services or talk to an expert.
Red Flags When Choosing a Reseller
A few warning signs consistently separate weaker providers from strong ones:
- No platform access at all — you should never be entirely blind to your own campaigns.
- Reluctance to explain fees — opacity now predicts friction later.
- No offboarding path — if leaving is deliberately hard, be cautious.
- Overpromising performance — credible partners talk in ranges and dependencies, not guarantees.
- Thin technical answers — vague responses on brand safety, measurement or inventory suggest limited depth.
Making the Decision
Choosing a DV360 reseller in London comes down to three questions: How much control do you want? How much expertise do you need? And how transparent is the commercial relationship? Get clear answers to those, verify the partner's credentials and data policies, and you'll avoid the most common pitfalls.
A good partner adapts to your situation rather than forcing you into a single model. Whether you need nothing more than a compliant seat or a fully managed operation across display, video and CTV, the structure should serve your goals — not the reseller's margin.
Talk to a DV360 Partner
If you're comparing DV360 resellers in London and want a straightforward conversation about access, engagement models and transparent commercials, we're happy to help. Get in touch with our team to discuss the setup that fits your objectives — no pressure, just practical guidance from an experienced DV360 partner.