Since September last year I have been working as a One-to-One tutor in a government school in Sussex. We are a small team with just me (the English tutor) and a Maths tutor.
The scheme was launched last year to help underachieving students. So far I have been working with Years 7, 8 and 9 but I have met some tutors who have been working with GCSE students.
There has been some misunderstanding as to what its purpose is. This was cleared up for me at a reading and writing training session I attended in Eastbourne. It is not for tutors to help students with their current work, homework or GCSE coursework but to design a scheme of work for their individual students, working on the areas that their class teachers have identified as target areas.
I would definitely recommend the training session if it is offered to you. You can view training sessions on your local authority website. For example, mine is the Sussex LEA.
In the school portal you also get access to the forms you need. Even if you are an experienced teacher, there are some very useful tips on how to assess students (that can save time!). It is especially important if you are going to be observed by an outside body, which they are supposed to do every term.