Sent my CV to HR who was very responsive. I got first interview at London Office where they asked me typical questions about my career ambitions and past projects - nothing technical. After first interview there was another interview with my prospective line manager. Again, it was just a chit-chat. Having said that, the line managers was interested in my ambition to work in building services. If you want to work in this industry then you will find it easy to answer any question.