The only other website in my experience that's worth advertising on is Viva Street and you don't have to verify on there, plus you can pay with Neosurf vouchers. Tryst you have to verify with. I did a test recently advertising on the main sites such as UK AdultZone, AdultSeek, and a few others. Calls combined were around ten a week. I have no experience with the other sites mentioned on here though. VS is the biggest alongside AW I think.

Hey! I'm based in the east midlands and charge:
£100 for half an hour
£200 for an hour
£300 for 2 hrs
£400 for 3hrs

The reduction in 100 pounds for the hour for longer bookings works really well for me as it encourages clients to stay for longer. It also means I see less people reducing risk. I'm not showing off but I tend to bring in between 1 and 2k per week. I'm only on adult work but I've posted lots of pictures and videos on there and also cam on adult work which I think has helped clients see that I'm genuine and can have a nosey before committing to a booking, and I always do feedback on adult work as well! Hope this helps you lovely xx

It's great that you're doing so well but we all have to be realistic with our own advertising.
I do fine at £150ph but would not be busy at £200ph , not being a size 8  20something ... And no I'm not being ageist or sizeist and know that some women in certain areas offering certain services in the more mature bracket could command that, but I could not.
Also just the thought of longer bookings fills me with dread, an hour with someone I don't actually fancy is plenty long enough for me so if anything I'd want to charge way more for longer bookings but just prefer to avoid them, but maybe you attract more of the younger, fitter guys who spending longer bookings with isn't so woefully depressing and trying.