Lt Dalzell, from Hamstead Marshall, near Newbury, leaves parents Anthony and Colette, brother Angus and sister Olivia.

BBC: Lt Douglas "Dougie" Dalzell

The brothers and their sister Olivia, who won 4x100m silver at the Beijing Olympics, are now sponsored by a German brand of luxury cars.

BBC: Kevin Borl��e wins Golden Spike

Jonathan explains how, despite both his parents being former sprinters, it was his elder sister Olivia who inspired him to take up track after he saw her perform and how Kevin pushes him to improve his performance as they are equally strong and fast.

BBC: Borl��es aim to make 2012 a family outing