Rates vary hugely from what I have seen. Some charge £10 per hour for group tuition in Year 4 rising to £20 per hour for Year 5. Another I know charges £20 an hour for one to one tuition irrespective of age. A very indemand tutor I know charges £25 for an hour of one to one tuition and an extra £5 for an hour of testing (where the child is left to carry out timed tests so the charge is for photocopying and marking). I personally feel £40 is rather a lot and the experienced tutors I know of dont charge this much, but then they are booked up years in advance.
I was at one of my children's schools talking to a parent who said he paid £70 for each hour
that's the most shocking price I have heard!
In general prices vary according to whether it is a group or one to one, the experience of the tutor, whether you travel to them or them to you etc so many factors...