Sorry to deviate form the topic again...
Go-arounder,
Acutally, MYT did have a 757 based at Newcastle alongside the 320 last summer for the busiest holiday period.
G-PIDS during the easter holidays
http://www.airliners.net/open.file/229601/M/
G-CCMY during the summer holidays
http://www.airliners.net/open.file/263176/M/
Granted the 757 coverage didn't last the whole of the summer season, but thats still a reduction in capacity.