Please be careful with any guy who gave you the number +44-7452 and asked you to add them, This number is from Isle of Man but the guy will claim that they are in London or UK at the moment.
Attached is the photo that scammer used, he claim his father is from HK and his mum is from Korea.
It's easy to tell if he is a scammer, just ask for a video call, then the guy will disappear.