I really don't like having to do this, but I'm thinking I'm going to have to let one of my staff go, shame is that I know he's got a few problems in his personal life and he's really a nice guy.
I've sacked plenty of people in the past & its always been easy as they where often arseholes to boot. but this guy is not a bad bloke, just no good at the job.
I've offered him extra training, he turned it down
I made him take extra training, he was better for a week
I found him a place in a diffrent department, granted it was less wage but it would of been a sercure job as it fitted his skills fine. - He declined
Now its got to the point where we are having to carry him, and I can't cover his cock-ups any more, and the other department has filled there vacancy...
So how would you go about this ? I used to be a ruthless bastweard but this kinda getting to me, I know that once he's out of the building I wont have to see him, but still I feel I could of done more for him,
In my time as a senior manager, with 3,500 staff under my control I had to make many unpleasant decisions for the sake of the company, my division, my staff and also for the sake of mine own career! I lost count how many had to depart from the companies employment by way of my action.

You have done everything you can it would seem to try and rescue this guy from his doom. It is commendable that you have tried the retraining approach which was always my favoured option, unless it was a question of integrity and I had to sack many for that including another field manager!

However, now I would suggest you fully implement, or finalize if that is applicable, your companies disciplinary proceedure. This must be followed by the book, and if the employee does not finally respond to this he will have to have his employment terminated. It is vital of course that throught this process you are not the person who act as judge, jury and executioner. I do not know how big or small your company is, but it is important other, different, managers are used throughout each stage of the disciplinary process, and the employee is given every opportunity to ammend their ways. By the sounds of it this has already started to happen. 8-) 8-)
If you follow these vital rules, if the case end up in front of an industrial tribunal your decisions to dismiss should be upheld. I had to attend personally in excess of seven in my time as ex-employees appealed against my decisions, and not one case was successful.

One things for sure in management today you cannot afford to take the soft option ever,

if you value your team's viability and your own career. You have to take the correct legal action as soon as possible.