Nearly new inverter, continental type socket, ideal for running laptop or similar low-powered mains electrical items off boat 12v system. These Victron inverters are top quality kit. Comes with box and instruction manual. £100, cash only, buyer to collect Bucks or Port Solent.
Dahon Getaway III folders, with bags (one has broken zip), reasonable condition (need a little maintenance), £100 the pair (or make me an offer), cash only, buyer to collect Bucks or Port Solent.
For ease of access from London, consider Port Solent (I wouldn't want to live there but it's a secure place for a boat, with good boatyard facilities, top end of Portsmouth Harbour) or Ocean Village (Southampton). The latter has all tide access, the former a lock (but quite well organised)...
Nereus also do a dual LPG and CO alarm - I've just bought one. And their LPG sensors are waterproof so can go in the bilge, where Gas would end up. And they're a UK company, based in Poole. Why not have a shoofti at the website?
I don't know - I'd be afraid of leaving scratches on the gelcoat. The aforementioned magic sponge is said to be melamine foam, and melamine is a sort of plastic, not stone or pumice.
I'm thinking of investing in a folding RIB (F-RIB) as a tender, having seen them at the Southampton Boat Show (see www.nestawayboats.com/F-RIB for details). Just a small one (275); a RIB is handy when you're up against Caribbean coral heads, and a folding one could be stowed below for the...
For fenders I swear by (at?) magic sponge, aka melamine foam. Also sold as "doktor power" in places like Robert Dyas. It's very effective on fenders, and also for removing stubborn marks on gelcoat.
Try the Service Centre in Wareham, Dorset - they reprogrammed a VHF set for me to add ATIS function and Dutch channels and the service was efficient. They might be able to sort your radio out. Website is www.marineelectronicservice.com