A former binman from North Yorkshire who murdered his girlfriend, her twin sister and a frail elderly couple launches an appeal today against an order that he must spend the rest of his life behind bars. Mark Hobson, 35 - pictured above at his arrest - admitted the murder of his girlfriend Claire Sanderson, 27, and her sister Diane at his flat in Camblesforth and killing pensioners Joan and James Britton at their home near York.