The firm has provided the BBC with security services since April 2014, when it won a three-year deal with the state-owned broadcaster, and said the two-year extension – which begins early next year – is worth more than £20 million.
Interserve handles all manned guarding, close protection and control room operations at a variety of sites, including Pacific Quay in Glasgow, Broadcasting House in London and the Media City UK complex in Salford.
Tom Ward, the group’s director of operations for security, said: “We have a strong working relationship and have built up a track record of delivering outstanding service across a large and diverse portfolio. We look forward to continuing our work with the corporation for a further two years.”
Interserve also provides the BBC with services including cleaning, maintenance, mechanical and electrical, signage and waste management.