The news comes the same week that Social Communications, the public affairs and PR agency, announced it had won a brief with the National College for High Speed Rail, one of five new employer-led colleges created by the Government to create the talent needed for HS2 and future projects.
Ruse left HS2 last month, having led the press unit since October 2013. Prior experience includes time as director at PR agency M&N Place, and working for Freuds and Blue Rubicon. He has also held senior roles at two organisations that own and operate the Channel Tunnel rail link - London & Continental Railways and High Speed 1.
He started with Social Communications on Monday, opening its King's Cross office and taking the job title of London MD.
The agency's group MD John Quinton-Barber said: "Ben brings unrivalled expertise and experience and with him on board we can now look to expand our portfolio of clients in the transport, infrastructure, housing and construction sectors – those are strong growth areas in the UK. We know there will be demand for what we offer."
The agency was founded in 2013 and now has 14 staff. Clients include property and redevelopment firm Places for People, Lidl and Extra Motorway Services.