Yes, I have a road map and I'm available for school visits! I have visited both primary and secondary schools, usually speaking to pupils from year 5 through to year 8.

Some possibilities:

I am a member of the Society of Authors, and charge the recommended minimum £300 for a full day, or £200 for a half day, plus travel expenses (I live in London).
Teachers, please note: I will bring copies of my books to sell. I will really appreciate it if you do a little bit of advance planning; please let the pupils know a bit about my books in advance, and suggest they bring in spending money. I guarantee they will appreciate it!
Please contact me for details on tailoring the visit to your needs; I'm flexible. Thank you!