Coastal Forces Veterans

I am interested in the history and boats of the 7th Motor Launch Flotilla based in Dartmouth in 1941-?43? (they are not recorded in the April 1944 Redbook). 4 of the 7th Flotilla's MLs (156, 160, 177, 270) were taken on Operation Chariot at the last minute, and many of their crews were decorated. Any help or guidance much appreciated.
Jonathan