Quick update...
Went to see CRS yesterday morning, was examined briefly with finger, I tolerated the examination but still hurt (burning feeling), was told that it was most likely to be a fissure but couldn't be sure as he didn't want to insert a camera and cause more unnecessary pain and has prescribed me Diltiazem which I have to use for 6-8 weeks, then have to go back and see him, if nothing has improved he'll put me under anaesthetic and do a proper examination, if a fissure is seen then LIS will be performed, anything else will also be repaired
So basically, it looks like things will get sorted out one way or the other, the only thing is I have to wait for the Diltiazem to be ordered as none of the pharmacies stock it as a rule, it's known as a special order item, hopefully I will have it in a couple of days though :)