Good to know:

You have to know that for almost every hostel in London, continental breakfast and bed linens are included. Also, most of the time there is an internet café, a safe luggage storage (a tip: don't forget your padlock for your locker, although you can usually buy one from reception), a TV lounge and a laundry room. Also, if you have any information about what to do or where to go, the information desk should be more than happy to tell you!

Rather than constantly repeat myself, except for when I point out that something is missing, you can safely assume that these are included.

P.S. Because of the UK law, if you are less than 18, you cannot enter into a bar, this law is obviously valid in the hostel too, sorry!