We made it!
We arrived in London at about 6.30pm Monday night, went through passport control (I'm so glad I had a British passport!) collected our luggage and got the train to our hostel.
We arrived here at about 9pm and checked in. Walked into our room to find a large, snoring foreign man sleep talking and yelling in one of the beds, and our assigned beds slept in. Awkward. We've changed rooms :)
We showered, dressed, came upstairs to use the Internet and decided it was bedtime at 11pm. It's now 5am and we're wide awake.
Our door is so freaking loud, we snuck out to come and use the Internet again. In our pyjamas, without shoes. Cute!