Assuming you don't work weekends or bank holidays here's how you can get 55 days off work in 2019 by just booking 25 days from your annual leave
Easter - Book off April 15th- 18th & April 23rd - 26th , that means you'll be off work from 13th April to 28th April.
May - Book off May 7th - 10th & May 28th to 31st
Summer - Book August 27th to 30th
Christmas - Book off December 23rd, 24th, 27th, 30th and 31st .