Equistone Partners Europe completed the management buyout of WHP in 2018.: A private equity-backed telecoms business in Warrington, which works with the likes of EE, 02 and BT, has acquired its third business in the last month. Founded in 2004 by Alex Welch and Matthew Riches, with Kevin Doncaster joining as director in 2005, ICS Group has grown into a telecom rigging installations and design company with headquarters in Braintree, Essex and a regional office in Cambridgeshire.