Thanks all for your kind comments.
So today I emailed my consultant with the results of the PSA and a couple of questions regarding treatment - was a PET scan needed etc and got this reply (not bad getting a reply within 4 hours of sending it LOL)
"We will check the PSA again in 3 months, I will give you the prescription at our consultation in January. As long as it has not passed 0.2, there is no need to change the treatment. We will discuss carrying out radiotherapy when it reaches this level. There is no need to do a PET scan, the PSA is still much too low."
So I am relaxed that they are not jumping up and down to get anything done urgently. :)