We had a very good tutor for 7+ through TutorMapper.
I am not sure if she does 11+ but I will send you her details if you are interested? She lives in Ealing though and you will have to pay for her transportation which is 6.4 pounds per session.

Hi, Mamamunchkin
We have a great track record in 11+ (a 93% success rate in 2016) and a fantastic group of enthusiastic, engaging and highly experienced tutors from whom we could find the perfect match for your individual child.

We can also assess you child's potential to help you choose the right school for them. Please give us a call on 020 3488 0754 (or have a look at jkeducate.co.uk)

Good luck with the 11+ journey!
JK Educate

Hi
Am starting to look for tutor for my child in preparation of 11+ and NVR/VR school tests. Does anyone have a tutor they can recommend who is both engaging and gets great results. Thanks