I believe that the MSFU was based at Speke with it’s catapult launched Hurricanes and Fulmars, 1941 to 1943.

http://myweb.tiscali.co.uk/609photos/Angels%20and%20Gremlins.htm

Interestingly it is hoped that the author of this account will be at Legends next month with the 609 Sqn chaps in the TFC hangar.