Well, B got my camera working, more or less. The problem was that the lens wouldn’t come out; he thumped it for a bit and it got unstuck. The lens now won’t go back in again, but at least I can take piccies again.
We’ve not bought a car yet. But we’ve put our old Citroen on Ebay – spent the morning washing it and cleaning it up so that it looks nice in the photos; the sun coming out was a bonus. (If you’re interested, the eBay listing is here.)