Thank you for your advice and thoughtful responses, may I apologise for my delay in responding to you.
My Dad does want to look at all appropriate options open to him, he is mentally very well and does retain alot of interests and is really enjoying his new home he has recently downsized to.
The consultant is a urologist, it may be worth exploring an opnion from an oncologist or radiotherapist as you suggested Dave at least to really clarify options and risks properly. We did wonder if different areas may have different approaches/policies to this so the advice around this gives us something to think about
My Dad is thinking how best to proceed, it is really helpful to take some ideas and opinions from you so thank you.
If you have any other advice please pass this through.
Thanks vety much
Adrian