Measurement
Part of Appointment setting agencies measurement explained
Appointment setting agencies attribution methods without the guesswork
Compare first-touch, last-touch and blended attribution for appointment setting agencies, with a worked example showing where credit really lands.
What to take away
- A Manchester software firm running inbound ads, an SDR team and an outsourced agency can attribute the same closed deal three different ways and get three different answers.
- First-touch flatters whoever found the lead, last-touch flatters whoever booked the meeting, and neither tells you whether the meeting was worth booking.
- The method matters less than the rule you apply consistently, and the rule must be written down before the campaign starts.
- Blended models work when you have enough volume to split credit; below roughly 50 closed deals a quarter, simple rules beat clever ones.
- Whatever you choose, record the source field at the point of capture, not from memory at reporting time.
Most B2B teams in England buy appointments from more than one place. A marketing team generates enquiries, an internal SDR books some meetings, and an agency books the rest. When the sales director asks which channel produced the revenue, three people give three answers.
That is not a data problem. It is a definition problem. Attribution is a choice about who gets credit, and the choice has to be made before the leads arrive.
The three methods in practice
First-touch attribution
First-touch gives all credit to the source that created the contact. If a prospect downloaded a guide in January and a meeting was booked in June, January's channel wins.
Attribution Models Compared
First-touch
- Credit
- Source that created contact
- Best for
- Justifying brand spend
- Weakness
- Ignores nurture
Last-touch
- Credit
- Source that booked meeting
- Best for
- Agency meeting volume
- Weakness
- Ignores earlier touchpoints
Blended
- Credit
- Split across touchpoints
- Best for
- Balanced view
- Weakness
- Needs clean data
This suits teams trying to justify brand and content spend. It is weak when a long nurture sequence does the real work, because the first click gets credit for a decision made months later.
Last-touch attribution
Last-touch gives credit to whatever produced the booked meeting. An agency that books 40 meetings a month looks excellent under this model.
It ignores everything before the booking. A prospect who had already decided to buy after reading three comparison pages will still be logged as an agency win. The measurement and reporting guide sets out how to pair this with pipeline data so the credit is not taken at face value.
Blended and position-based models
Blended models split credit across touchpoints, usually weighting first and last contact more heavily than the middle. They need clean, complete touchpoint data to work.
For most small sales teams, a two-part split is enough: one half to the source that created the contact, one half to the source that booked the meeting. If your CRM cannot hold that, fix the CRM first. The reporting dashboard walkthrough shows the minimum fields a dashboard needs before any weighting is applied.
Worked example with real numbers
Take a Leeds firm selling compliance software. It spends on paid search, runs two SDRs, and pays an agency a retainer plus a per-meeting fee.
| Item | Monthly figure |
|---|---|
| Paid search spend | £6,000 (illustrative) |
| Two SDRs, fully loaded | £7,500 (illustrative) |
| Agency retainer and meeting fees | £4,500 (illustrative) |
| Meetings booked: search | 18 |
| Meetings booked: SDRs | 22 |
| Meetings booked: agency | 30 |
Seventy meetings cost £18,000 (illustrative), so £257 per meeting (illustrative). Last-touch says the agency is the best performer because it books the most. First-touch says paid search is, because most agency-booked prospects first arrived through a search ad.
Neither answer helps. The useful number is cost per closed deal, and that requires the CRM to carry the original source through to the opportunity. Attribution methods only pay off when the source field survives the handover.
Rules that keep the numbers honest
Write the rule down before launch
Agree the model, the lookback window and the definition of a qualified meeting before the first campaign goes live. A 90-day lookback suits most B2B cycles; a 12-month window will pull in contacts who have forgotten the original enquiry.
Check the legal side of the data you attribute
The ICO publishes enforcement action against nuisance callers and unlawful marketers, which is worth reading before you buy any contact list to feed the top of the funnel. Attribution built on data you should not hold is not measurement.
Common questions
Which attribution method is best for outsourced sales?
There is no single best method. Use last-touch if you mainly need to hold an agency to account for meetings booked, and a two-part split if you also want to justify marketing spend. Pick one and keep it for at least two quarters.
How many closed deals do I need before blended attribution works?
As a working rule, below about 50 closed deals a quarter the split becomes noise. For smaller teams, a simple first or last-touch rule is easier to defend in a board meeting.
Does the size of the UK market change how I attribute?
Not directly, but it sets expectations. GOV.UK's business population estimates for 2022 put the private sector at 5.5 million businesses, so most campaigns reach a small slice of a very large pool. The CIM's marketing articles and reports cover audience insight if you need to narrow that pool before spending.
Can I attribute meetings the agency books on my behalf?
Yes, if the contract requires source data to be passed with each booking. Ask for the original enquiry date, channel and consent record. Without those fields, you are attributing on trust.
