11 CONSULTANTS
Demand & strategy
Programme leads who own the conversion model and the commercial relationship. Each carries a maximum of three clients and presents their own results.
The firm
Founded because the handover kept failing.
Northbridge Marketing was started in Leeds in 2016 by a technical SEO consultant and a marketing operations lead who had spent years being handed campaigns that could not be measured and CRMs that could not be trusted.
Firm register2026
Founded2016
Consultants31
OfficesLeeds · London
Clients under management27
Average tenure2.9 yrs
Clients per consultantMax 3
01 / Origin
The problem was never the marketing
Between us we had audited well over a hundred B2B marketing functions. The pattern was almost always the same: competent people producing reasonable work on top of a measurement layer that made it impossible to tell what was working. Lifecycle stages nobody could define. Three teams reporting three revenue figures. A CRM full of contradictions.
Agencies were not incentivised to fix that. Fixing it takes a month, produces nothing photogenic, and makes it harder to claim credit afterwards. So it stayed broken, and everyone kept optimising in the dark.
Northbridge was built around the opposite bet: do the boring foundational work first, insist on it, and accept that some prospects will go elsewhere for something quicker. Ten years later that first month is the thing clients most often say they underestimated.
Standing commitmentsCONTRACTUAL
Percentage-of-spend feesNever
Platform rebates acceptedNever
Accounts owned by clientAlways
Code & models handed overAlways
Documentation includedAlways
Notice period60 days
Sales in kickoffRequired
02 / Structure
How the firm is organised
Four practices. Operations is larger than a firm our size would normally justify, because it is where the failures we were founded to fix actually live.
9 CONSULTANTS
Search
Technical SEO engineers and content strategists, including two former in-house developers who write the migration specifications themselves.
8 CONSULTANTS
Operations & data
Marketing operations, analytics engineering and attribution. They hold veto power over any claim that appears in a client report.
3 CONSULTANTS
Paid media
A deliberately small paid team, because in B2B paid media should be a component of the system rather than the whole of it.
03 / Operating principles
Five rules we do not bend
These appear in our engagement letters. Each has cost us at least one prospective client, and we have kept all of them.
RULE 01
Measurement precedes activity
We will not launch a programme on top of a measurement layer we do not trust. If a client insists, we decline the engagement rather than produce reporting we cannot defend.
RULE 02
Sales must be in the room
The sales leader participates in the first four weeks. Without shared ownership of what qualification means, every subsequent report becomes a negotiation.
RULE 03
Write everything down
Data models, stage definitions, campaign logic, SQL, migration specifications. In your repository, in plain English, readable by someone who joins in two years.
RULE 04
Report the failures
Every monthly report has a section on what did not work and what we are changing. It is the first thing most clients read.
RULE 05
No lock-in of any kind
Accounts, code, models and documentation are yours from week one. Sixty days' notice, a full handover, and a call with whoever takes over.
RULE 06
Recommend the cut
If a channel we run cannot demonstrate contribution across two quarters, we recommend stopping it — and reduce our own fee accordingly.
Working with us
Ask us the questions we would ask you.
What did we get wrong last year? Which client have we told to reduce their budget? Can we show you the documentation from a live engagement, redacted? We would rather answer those now than in month six.
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