How do you review a B2B influencer marketing launch without a vendor pitch

What to take away

A launch review is a documented assessment of a proposed programme against agreed criteria, not a vendor scorecard. If your reviewer cannot show the criteria before the pitch, you are reading marketing.
In England, the disclosure duty sits with the brand as well as the creator. The ASA's guidance on recognising ads in social media explains why a paid partnership label is not optional decoration.
The checklist below is the part to copy. Disclosure, approvals, measurement and ownership, with a named owner for each.
No hands-on testing was carried out. No platform, agency or creator was briefed, paid or observed.
Ownership of the workflow and the quality gate before publication decide most launch outcomes, and both are covered in the B2B influencer marketing operations and delivery guide.

What was assessed, and what was not

A proposal that passed and one that failed

A reader in Manchester or Leeds planning a first B2B launch usually arrives with a proposal document and a launch date. The two examples below come from one brief, and they show an assessed proposal beside a rejected one.

The first passed on process. Every performance figure carried its source and date, the disclosure wording was written out, the approval chain named two people, and success was defined as one metric with a review date. Its reach estimate was the lower of the two.

The second was rejected. The reach figure had no source, the label was listed as "to be agreed", and nobody was named as owner of the approval. It failed on evidence rather than ambition.

Assessed vs Not Assessed

Assessed

Disclosure step: Yes
Approval chain: Yes
Measurement definition: Yes
Task ownership: Yes
Platform performance: No
Creator quality: No
Pricing fairness: No
Campaign results: No

Not assessed

Disclosure step: No
Approval chain: No
Measurement definition: No
Task ownership: No
Platform performance: Yes
Creator quality: Yes
Pricing fairness: Yes
Campaign results: Yes

Assessed: the disclosure step, the approval chain, the measurement definition, and ownership of each task. Not assessed: platform performance, creator quality, pricing fairness or campaign results. Those need live data this desk did not collect.

Copy this checklist into the brief:

Disclosure:the exact label wording, on the creator's post and on the brand's own post.
Approvals:who drafts, who approves, and by what date.
Measurement:the one metric that defines success, its source and its review date.
Ownership:one named owner per task, one approver per gate.

Vendor claims versus independent evidence

A proposal that says a creator "reaches 40,000 decision makers" is making a claim. Unless it names the source and the date, treat it as an assertion. For example, a vendor might state that a launch will generate 300 qualified leads in a quarter; that is a projection, not evidence.

Independent evidence looks different. The ASA's page on recognising ads in social media and influencer marketing sets out the disclosure expectations a UK launch must meet. It is published by the regulator rather than the seller.

The Competition and Markets Authority publishes separate guidance on social media endorsements, which covers hidden advertising by influencers and brands.

The five steps a launch review should follow

1 to 3: define, gather, test

Define the criteria before seeing any proposal. Write down what a pass looks like for disclosure, approvals and reporting.
Gather the evidence packthe disclosure wording, the approval chain, the reporting definition and who owns each item.
Test the disclosure plan against the regulator's guidance, and record where the brand's own post carries the label.

CIM's code of professional conduct gives the ethical frame for steps one to three: marketers are expected to be honest about what a paid arrangement is.

Five Launch Review Steps

Define criteria before seeing any proposal
Gather evidence pack with source and date
Test disclosure plan against regulator guidance
Assign an owner to each task
Sign off against criteria, not pitch

4 and 5: assign, sign off

Assign an owner to each task. A launch with no named approver stalls at the first draft. The B2B influencer marketing team roles in England article sets out which roles typically hold the brief, the approval and the reporting.
Sign off against the criteria, not against the pitch. Record what passed, what failed and what was deferred.

A UK team briefing a creator based in the EU, or running paid distribution into EU markets, faces two rule sets. The Digital Services Act package explains the platform rules that sit alongside UK advertising rules. The review process set out here is UK-focused; this note is the exception.

Where launch reviews go wrong

Two failures account for most weak reviews. The first is timing: if the review arrives after the contract is signed, the criteria can no longer change anything. The second is audience: a review written to persuade the vendor reads as a negotiation note rather than a record.

Deliver it to the approver before signature, and set out what would make the programme fail. That version changes behaviour.

Common questions

Does a launch review need a score at all?

No. A pass or fail against written criteria is usually more useful and easier to defend than a numeric score. Scores invite debate about weighting; criteria invite evidence.

Who should own the review in a UK team?

Someone outside the buying decision, ideally the person accountable for compliance or delivery. If the same person sells the programme and reviews it, the assessment carries little weight.

What counts as independent evidence?

Anything the vendor does not publish or control: the ASA, the Competition and Markets Authority, or your own first-party data with a stated method. Undated screenshots and anonymous benchmarks do not count.

Can this review be used for an EU-facing launch?

Partly. The disclosure and approval steps transfer, but platform obligations differ. Check the Digital Services Act material alongside UK guidance before you commit.