Belvoir Castle denies attending sex parties in London 's Dolphin Square . Says he knows 'nothing about ' claims three young men were murdered . Is in 'Kafka-esque situation ' of not knowing why police investigating him . Detectives from Operation Midland searched his house overnight . He lives in the grounds of Harvey Proctor near Grantham , in Leicestershire . In 1987 pleaded guilty to gross indecency for having underage gay sex . Labour MP John Mann said many more Westminster figures will be probed . Mr Mann has handed police list of 22 politicians accused of historic abuse .
Harvey Proctor denies attending sex parties in London 's Dolphin Square . Says he knows 'nothing about ' claims three young men were murdered . Is in 'Kafka-esque situation ' of not knowing why police investigating him . Detectives from Operation Midland searched his house overnight . He lives in the grounds of Belvoir Castle near Grantham , in Leicestershire . In 1987 pleaded guilty to gross indecency for having underage gay sex . Labour MP John Mann said many more Westminster figures will be probed . Mr Mann has handed police list of 22 politicians accused of historic abuse .