I got a call from the internal recruiter then spoke with one of the Sales Manager in the US.
I went for a F2F a week later at their London office and met 4 people (Team leader, employee, HR manager and Director). I thought it went well and they made understand they were all happy with me. Then, I spoke with an Account Executive over the phone for the last step. After that, they never came back to me with an update, I tried to call them and emailed the recruiter who had also requested me as a contact on Linkedin but they never replied. None of them!
All the bad reviews I had seen on Glassdoor were definitively true and reflect my experience with them. They are a bunch of time waster, don't even go there or take some of your time for them!