Hornby R30124 LNER Class W1 Rebuilt Hush HushHornby R30124 LNER Class W1 Rebuilt Hush Hush Sir Nigel Gresley's W1 4 6 4HP 10000 entered Darlington Works on 21 August 1935 for what was anticipated to be a major overhaul and modification. During this period Gresley decided that it was time to rebuild 10000 as a three cylinder locomotive with a conventional firetube boiler and 10000 was moved to Doncaster Works on 13 October 1936. When 10000 was finally released from Doncaster Works in November