All you have to do is put the address in Google and have a look.
This is what I found:


This Is Your Office provides UK Virtual Office services and is a division of the Made Simple Group Ltd
Registered Office address: 145 - 157 St John St, EC1V 4PY, London
Company Number: 05104525 Vat Number: 820956327

GBP15 per month gives you a local address
Lookes nice - worth nothing

/R