Thank you for the information about the visa, I will make sure it is cancelled. I will apply for the non visa at the Thai embassy in London. Would it be possible to send the paperwork to the address you have for me in Bangkok?
I have the documents and paperwork and will drop off at the school tomorrow after work. I have contacted the police clearance and I believe that something has gone missing in the post from them and I may need to reapply. I will include my police check from 2014 whilst I wait for this to be sorted, if that would be any help?