Well had a look for the strut bolts and nuts by the part numbers, on Ebay and Amazon they all seem to be out of stock.
I had a look at eurocarcare looking at the website I thought it was somewhere in Europe, as it turns out they are in Derby and the parts are in stock, so I have ordered them, the postage was £6 but the parts are far more reasonably priced.
I have also ordered the droplinks from ECP as they are not in great condition and may as well be changed too.

Bolt tensile specs
https://www.westfieldfasteners.co.uk/Ref_Strength_Spec.html

Shop 4 Parts front strut pinch bolts
https://www.shop4parts.co.uk/?name=store&op=Product&ProdID=15193

eBay has these -
https://www.ebay.co.uk/itm/M8-M10-M...357635?hash=item5481592bc3:g:bDYAAOSwJrBea1ws

Pitting corrosion can be an issue with high tensile bolts. Coat them end-to-end with a good high solids anti seize paste. Any damage to the zinc won't be such an issue.
https://www.ebay.co.uk/itm/CS-90-CO...4bb890fba7af88517b40|ampid:PL_CLK|clp:2334524