There are tons of other staffing companies in London so do yourself a favour and don't pick AYS - Anonymous employee At Your Service (UK) Employee Review

-The pay is bare minimum -You get fined if you are ill on the day equivalent to the pay of a 4 hour shift -You get treated badly by the people you serve at venues -Their invoice slips make it difficult for you to check if your pay is correct -You get treated badly by the management you're hired out by -You are paid less than people from different staffing companies (By Word of Mouth, Esprit etc) who are doing exactly the same job as you, with you -The longest I've had to wait to get an email reply was 15 days, after sending 4 emails in total -You get shouted at for not being able to work on a day you've already said you can't work on (I got an aggressive phonecall trying to make me work on the day of a funeral of a family member. The absolute last straw)