There were 2 interview stages, both online.
On the first one they didn't ask me anything, they just wanted to meet me as a person and decide whether I will fit with the company's environment . The only thing I've been asked is to tell them what I know about them. They really want you to know what the company is doing, they are also appreciate if you go through companies house and check their filling history , tax returns etc. They extracted 3 people from stage one and invited them for a second one. On this one I've been asked more detailed question. The company seems to have a nice environment but its not for someone who is looking for progression as its not an expanding one. They do have generous salaries though.