Markus
Claims to be staying at Connaught Hotel Mayfair
075998353**
Persistent caller through WhatsApp/video call
He gives lots of compliments saying 'you look beautiful..I need to book you NOW,
And then he flips personality, saying things such as 'why don't you answer sl*t!'
Unstable and weird man*
Booking at your peril.

*From the conversations, he comes across as a Dominant. But even Dominant clients are respectful on the phone.

His age I would say late 40s to early 50s
Hair is dark salt and pepper, a grown out crew cut style, no side burns.
Eyes close set and dark blue/light brown?
Not a strong jawline, more sharp and pointy
The accent is clearly English, slight Essex accent.
Slim and attractive, some might describe on a dating profile 
Personality is definitely not attractive.