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Peter Mortimore, Founder and Operating Partner at Third Act

Meet Peter

I've spent twenty years selling. Now I build the thing I kept wishing existed.

I'm Peter Mortimore. I spent six years leading Salesforce's Professional Services and Healthcare verticals, heading the teams that sold to thousands of firms like yours. At Nitro, I sold to global enterprise pharmaceutical leaders.

The firms with the most to gain from AI were the least equipped to adopt it. Big consultancies were priced for enterprises. Agencies could build anything, but couldn't judge whether it was worth building.

That judgment is what I sell. Third Act runs on the system it sells, so everything I'd build for you works here first.

Why Third Act

Act one

You built the firm.

Act two

You grew it into something clients trust.

Act three

It runs on what your best people know. That's where Third Act comes in.

Who we work with

Professional services firms with 5 to 50 staff.

Recruiters, agencies and consultancies in Ireland and the UK. I work with whoever owns the P&L: the founder, MD or managing partner.

This works when

  • The work around the work is costing you, and you know it
  • Your team uses AI, but everyone does it differently
  • Someone besides you can own it, about two hours a week
  • You'll change how the work happens, not just the tool

This doesn't work when

  • There's no repeat work to build on yet
  • You want someone to run the work for you
  • Nobody internally has time to be involved
  • The real answer is a hire. Sometimes it is, and I'll say so

How we work

Assessment first, then every month.

The tool is rarely the problem. The process underneath it is. So we start by finding out how the firm actually runs.

Weeks 1–2

AI Opportunity Assessment

Interviews, a data baseline and a 90-day plan.

By day 90

First result, live

Built, in use and measured. If it isn't, you walk away.

Every month

The next release

Something ships, the numbers update, you decide what's next.

Who does the work. I lead every engagement and sign off everything that ships. Builds are delivered by a vetted delivery engineer, a named subcontractor, working to Third Act's specs inside your own systems.

See what it costs Take the AI maturity score

The numbers

The background behind the judgment.

20

Years in enterprise software sales and revenue leadership

6

Years leading Salesforce's Professional Services and Healthcare verticals

1,000s

Firms like yours, sold to by the Salesforce teams I headed

£3m→£7m

ARR growth delivered as CRO at Nitro, in 18 months

2→25

Revenue organisation built from two people to twenty-five

$3m+

Net new ARR closed annually at Salesforce

Book a call 30 minutes. I ask questions. I don't pitch.
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