I reckon if I ever have to, I'll be going all the way to court out of principal although obviously each case may differ.
You have surprised me there actually Soupy.
Im only a sole trader one man band numpty who would in the vast majority of cases write a debt off as they never usually get large enough to fret about.
I'd take into account my time having to chase the debt, costs incurred and losing time from work to attend court etc. and cut my losses.
Although the £700 debt you mentioned I would certainly pursue the available avenues in order to collect.
I had you down as the type of business man who would look at a debt in the cold, hard light of day, do the maths and decide if financially it were worth while chasing or not?
Rather than go all the way to court "out of principal".
Then send one of the lads round to egg their windows....