I can remember "Raymond Baxter" in a newsreel film late 50's early 60s I think of Farnborough or some other air display where he referred to the 111 Lightnings as "Triple one Sqdn Black Diamonds".
I can also remember seeing several Lightnings taking off at Valley and going vertical until they disappeared into very high clouds I was stood in the dunes at Rhosnieger, it took years for my wife to find out the allure of the Rhosnieger Bay Hotel
