Summit Partners, a US private equity and venture capital group, has expanded its London office, appointing Oliver Thomas, a former Goldman Sachs analyst, as a vice-president.

Summit Partners closed a new $3.3bn (€2.7bn) combined global buy-out and venture capital fund in June, and said at the time that it would be looking to increase the amount of capital committed to Europe. It had previously only invested 10% of its funds in European buy-outs.