Pros
The people. Seriously the most talented, intelligent, well-connected, awesome group of people I've ever worked with (though 98% of them were laid off for seemingly no reason around Thanksgiving). Friends for life. The London office seems to be chugging along fantastically, but fair warning to U.S. applicants...run far away. (You'll notice lots of positive reviews from the London office, but beware that several of these are fake from Marketing/Ops teams members to save face. Yikes. Shady business.)
Cons
Some of the worst upper management I have ever seen in any organization...ever. The founders are practically cyborg robots with no human emotion or empathy and they hire upper management puppets who do whatever they tell them to instead of smart leaders who challenge and further the business model. They've closed Las Vegas and Edinburgh without a peep, San Francisco is run by algorithms, and NYC is hanging by a string (less than a handful of employees left). London's seems to be doing grand, but they have no experts to help run the U.S. and it's obvious.