Meridian Technical Services
Testing, inspection and certification for critical infrastructure
View companyPrivate Equity · United Kingdom & Europe
We partner with founder-led and family-owned businesses to build enduring companies — with patience, discipline and care.
Who we are
Capital Custodian Authority invests in profitable mid-market businesses with revenues typically between £10 million and £150 million. We take meaningful ownership positions, work closely with management, and hold for the long term. Our name reflects our conviction: capital is something we are entrusted with, and the businesses we back are something we are responsible for.
£1.4bn
Assets under management
24
Portfolio companies since inception
9
Average holding period (years)
70%
Investments alongside founding families
Our approach
Our fund structures allow us to hold investments for up to a decade. We are not forced sellers.
Every investment is supported by our in-house operating partners across finance, technology, people and commercial excellence.
Our partners invest personally in every deal. We succeed only when our management teams and investors do.
Sectors

Portfolio
Testing, inspection and certification for critical infrastructure
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View companyInsights
Viewpoints
Most founding families are not selling a business. They are handing one over. The distinction changes almost everything about how a transaction should be designed.
· 8 min read
Firm News
The firm has completed a significant minority investment in Northlight Data, a compliance data platform serving regulated industries.
· 3 min read
Viewpoints
A three-year hold forces decisions a business would not otherwise make. A ten-year hold permits decisions it should have made years ago.
· 6 min read