Going in Wednesday for cleaning which hopefully will fix it.........any ballpark figures for replacement price,,,priced them up to buy at £400ish.......can't be that much work to fit and re programme.

Reading the description on the PF website the standard reelmaster, although more expensive, is a better reel.
E.g. the lite version does not have snag detection.

Software won't be a problem.....it's more the "legal" route I'm thinking of........they're only about £400 to buy so why is fitting a new one so costly?

You'll only need one MOT checker to suspect and find it has no DPF and this info will get sent to DVLA which will essentially stop you  from getting an MOT test anywhere unless you have the DPF reinstated and software put back to   how it should be which will cost a hell of a lot of money. Law on DPF is far stricter than it once was with testers being struck off if they pass a vehicle they suspect to have had its DPF removed.

Lots of good businesses that specialise in cleaning or replacing DPF, back street garages usually mess this work up, so research who you use.   

I always send Christmas cards as a thank you for continuous custom, that usually reminds them to give a Xmas tip if they’re inclined to. What I receive in tips far outweighs the costs of the Xmas cards I get printed up, I change the design of my cards every year but always something with my logo on them.

They can be a nightmare but better to try and keep it in because it may not pass an MOT. Plenty of other things can begin to go wrong when removing it, mainly the software. It ends up going on a loop to try and find it and sometimes the immobiliser kicks in. I used to go a long drive once a week until I read about small metal discs that go into the diesel tank. Bought them for £40 for five and haven't had any issues since and that was years ago. Mike Brewer was advertising them, I thought it was a con but they worked for me.