Quick update on the tyre scenario.
Took it down to National Tyres this morning, these are the people that work with Holts with regard to the repairability factor.
After removing the wheel the fitter dunked it in a tank to find the leak and then removed the tyre.
The puncture was caused by what looked like a 2" round nail which had fully penetrated the casing.
The tyre sealing 'goop' looked just like that latex skin used in theatre makeup and wiped easily from the casing.
The fitter then washed out the casing with hot water and ensured it was thoroughly dry before carrying out a normal repair and balance, total cost £19.
He did advise that had I used the manufacturers (Peugeot) supplied sealant kit, the tyre would not have been repairable.
As for Mechmans £200 spare and jack option, I would have jumped at it, most alloy wheels with a tyre are well over a grand to buy let alone the jack and bits.