Edtwozeronine - your right, what I ideally want seems to fall very much in the camp of a professional shooters pistol with the price tag to match like the Rohm or new / nearly new LP5 or LP50. Serious money for a serious pistol!
Jesim - I dont think I could bring myself to stump up for a HW44. From what I've seen secondhand recently they are fetching nearly as much as I paid for my 110 and more than the Rohms that are available.
Evert - both lovely looking pistols but hens teeth themselves!
I think given the budget im looking at c. £250 tops for what is going to be used for less serious shooting I'm going to have to compromise and accept not all the boxes are going to be ticked. Being realistic I think I should take a look at a PP800 as it ticks most of the boxes. Despite not being self-indexing it is multi-shot and seems more likely to be the most accurate, fully adjustable sights, pcp and has the advantage of being easy to moderate for back garden use.
Thanks all for the input and suggestions, much appreciated and certainly gave food for thought.
Be good. And if you can't be good, be good at being bad.