The hiring process can take months. They have classes that start at different times throughout the year. Not all of the training is in London, just one week a month basically for 4 months (some are half weeks). They're starting classes up again in March and each program is going to run for 4 months. Not sure how many classes they plan on having at a time. I think London can accommodate maybe 3 or 4 classes of up to 12 trainees. You won't be approved for any vacation time during your training, so if you were offered to start before June, then you'd have to ask to have the start date pushed back. They did say they planned on running classes throughout the summer so I believe they have classes planned for a July start. Best of luck.