Slightly off topic but...This one reminded me of an old boy I used to work with who was a pilot with 23 OTU at Pershore. The radio callsign for Pershore was 'Firkin'. In the event of deteriorating weather at base, exercise aircraft were recalled...'All Firkin aircraft return to base'. He was still laughing about it 35years later! Vintage ATCO will know who I mean!
Spiney