617 Sqn still exists, based at RAF Lossiemouth, and is equipped with Tornado GR4 aircraft. Their motto is ‘Apre Moi Le Deluge’ (After Me, The Flood), a reference to the dam raids, the official name for which was ‘Operation Chastise’. Incidentally, the Howden Dam in South Yorkshire was where the practice flights took place, not Scotland.
More recently, the Sqn earned a battle honour in Gulf War 1, and on Operation Telic (Gulf War 2), carried out the RAF’s first attacks with the Storm Shadow stand-off weapon.
At the time of the dam raids, 617 Sqn’s Officers’ Mess was in a requisitioned house at Woodhall Spa in Lincolnshire. It is now a hotel, which I have been to, complete with Sqn bar containing some interesting memorabilia: