In my formative years, DA operated quasi-scheduled services between Gatwick and Zurich - officially charters but you could book any duration - and I used them a lot in the 70s. Also charters to the Med.

We booked a Ving (remember them?) last minute holiday to the Algarve and I was looking forward to travelling on their Comet IV to Faro. I was disappointed when they substituted a 727.

Remember their charter catering? Two flaps in the back of the seat in front - the top one with a 'meal' (sandwich) outbound, the lower one for the inbound. Did anybody use both?

Then there was the Danish company Danair, which sometimes led to confusion.

Trivia time: what did the Dan of Dan-Air stand for? Answer: Davies & Newman.