>>I am finding it increasingly difficult to urinate,but, still feel the urge to urinate very frequently.
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Has this been discussed with your consultant? Has he checked to see what the problem is? That is not clear from what I can see.

The main reason for going back for an endoscopy check on the bladder, is to make sure the growth has not come back. It is quite common for it to come back.

Its 8 years since I had my surgery and in the first 2 or three years I was going back on a regular basis. As time went on the time between each check up increased. Now I go back once a year and that will be for the rest of my life.