Bleeds Off,
Interviews for A320/321 all bases will restart after the summer I heard secondhand.
The process with Monarch is that you may well hear nothing in relation to your letter / online app for ages then interview, job offer and shortest notice you can give to your current employer to get on the course will all happen very quickly.
Training, flying and crews are brilliant here. Industrial relations stuff you can read about elsewhere.
PS if you know anyone who works for MON an email from them about you helps enormously.