Andrew Gaule talks to Peter Cowley, investor and director of Martlet Corporate Angel

Give us a brief introduction to your fund.

Marshall of Cambridge is a 106-year-old automotive and aerospace engineering company with revenues of around $2bn, employing 4,500 people throughout the UK, and run by the third and fourth-generation family members. We spent six months planning and launched in April 2011. We invest relatively small amounts – equivalent to a super angel – in five to 10 new deals a year, following on where appropriate. Over the past four and a half years, we have…