Killer’s mother plotted to reveal identity of witness who helped nail her son

The mother of a convicted killer plotted with two civilian police staff to reveal the identity of the protected witness who had helped send her son to jail, a court heard. Wealthy Chelsea boutique owner Diana Lank, 60, was the mum of former public schoolboy Rupert Ross, 34, who gunned down Darcy Austin-Bruce outside Wandsworth Prison. Ross and his accomplice, trained fireman Leon De St Aubin, 38, were both jailed for 30 years at the Old Bailey in 2011 for…