If your on a tight budget AYS maybe right for you. For £35 you get a very basic OW, protected sex, bit of a massage. Each girl usually does her own extras. Which normally are £10 each service. My advice would be to stick to the basic. Once you start paying £10 for this and £10 for that you could of paid for an indie. There are usually 3 girls to pick from. There are some good girls there. There is a lot of info/reviews on here for individual girls there.
Alternatively there's kitty's & co just up the road. Basic service there is £40. Same advice as above. There's a bit on here about the place.
AYS is friendlier in my experience. If I were you, read some of the reviews on here, then you can get a good idea who you'd like to see, a lot of the reviews mention what days individual girls work on. So you can then ring up on the day and check who's on that day. Turn up ring the bell and say I'd like to see ******** or alternatively just turn up and take your pick of 3. What change daily.