Srinivas Garimella at the Georgia Institute of Technology in Atlanta is developing a system in which external heat is used to boil off ammonia vapour from a solution.

Mulcaire pleads guilty to the same offence, and to further charges of intercepting phone calls made by other well-known figures, including Simon Hughes MP and model Elle Macpherson.

Team engineer Kerry Kirwan is flanked by team directors Steve Maggs (left) and James Meredith.