A day hotel is a good thing. Pretty anonymous - they have my punting email and I pay with my punting PAYG card. Both have only my first initial and my last name. They don't ask for passport. Not that the hotel gives a shit anyway. Some day hotels let you pay in cash, but I don't bother with this anymore. Actually, for me the larger risk is running into a friend. Very small risk, clearly, but it can happen. I have a story ready.
That way, you are open to any of the outcall only escorts. Some will come in from the home counties (may need to place a RB to find). It is very relaxing to chill in the hotel room and have the escort come to you. One at 11:00. Another at 1:00. Maybe wrap up the day with a trip to phoenix club.
For me, a day hotel in London is a very good use of £70.
Enjoy.