First Interview was a video call in two parts. First bit was answering basic questions you'd expect in an interview, then the second part was answering some simple maths problems. Second Interview was face to face at their Oxford office. They then asked the same initial questions again from the first interview and moved onto some more detailed mathematical problems. They were not too difficult but the delivery of the questions was not very good. I was promised expenses for my £50 trip to Oxford for the interview but they have ignored my emails regarding it. I received no feedback from the second interview, and was only told I didn't get the job in an automatic email after I had sent a follow up. In terms of interviews, it was not bad. In terms of experience with the company it was awful.