Following an online application I was called down to the Cambridge office after about month a half of waiting. They gave me a tour of the office and introduced me to various potentially future co-workers then took me to a small meeting room for a chat. It was a 1:2 interview with both a senior and more junior interviewee, very conversational and relaxed. Most of the time was spent talking through some of the projects they worked on and things that employees are involved in such as sports. I had some technical drawings with me so I briefly talked through the project surrounding the drawings which they liked. They pointed out issues with my work in a pleasant and constructive manner. Having prepared various answers for 'classic interview questions' I didn't have to use any of them. Following this they had a young engineer formerly of my uni come and have a chat with me about the company, projects and the city - this wasn't formally part of the interview process but was a nice addition. Coming out of the interview I wasn't sure how it had gone, however, I had a phone call the next day to offer me the job.