Would you be happy to visit them in their homes also?
I have worked Outcall only for over a decade.
You need to make it crystal clear in all your advertising, so the idiots who still ring you anyway are razed down from numerous per day... to around 3 every hour 

Hello All,

I only do outcalls because I have a kid.

It seems to be that clients lose interest as soon as I tell them they need to book a hotel room.

My friend always books a hotel room for a day and then advertises on AW. Just not sure if that would work in London as there is so much choice?

Do you have any thoughts/ tips what I could do about it?

Why don’t you tell them as per your profile you’re not able  to accommodate and they have three options::

1. Invite you to their place
2 They can book a hotel
3. You can book day use/hotel room for extra $$ (covering hotel cost) with a deposit to be paid. Deposit is very important in this situation because you don’t want to end up paying for the hotel if they decide to cancel. And yes plenty of clients cancels last minute or do not bother to show up

Maybe write something similar on your profile because they are thick and will ask you again and again.

I do outcalls only in London.
I book one of the busy business chain hotels. Preferable without a lift card so the client can come straight to the room. Because the hotel is busy and lots of business types during the day, it feels discreet. In my opinion it's better to book a big hotel just in case they figure out what you do. I was kicked out before from a much smaller city apartment hotel.

I have used PayPal for deposits but from a PayPal account that doesn't use my real name or address. I would be very careful about using PayPal for charge backs though. I much prefer a UK bank transfer if they have a UK bank account- you just give your sort code and account number.