A few days ago gave Alex the information, this morning added a page in the Roll of Honour for Robert Thomas in the ‘Site Memorial’ section:-
http://www.roll-of-honour.org.uk/t/html/thomas-robert.htm
Information
KEW:- WO 361/1633, WO 361/1631/1, WO 361/1222, WO 392/26, WO 345/51, WO 361/1945, WO 361/2008