I am a Tutor from Bucks. My parents employ me to teach their children to pass the Bucks 11 plus, nothing else. I keep to the 21 types in M/C format. I include some extra vocabulary work [flash card system] and some maths [but only the 4 operations] I found this forum a couple of years ago by chance. A so called 'expert' on Bucks was passing on totally inappropriate information for the Bucks test, I just had to reply...
As a parent you are employing your tutor to teach your child to pass the Tiffin test. You have every right to 'confront' this tutor, asking them why they are teaching your child 35 plus types of VR [when only 21 are required] and in the wrong format.
Have you thought of DIY, it is perfectly possible, in fact most people who visit this forum do so.
There are many forum members who can help you through the process. Have you looked at the Surrey section for more details on the Tiffin schools?
Whatever you decide, good luck.