So far (for my area Inverclyde) I've found an Air Products agent in Greenock, who will rent you a 5' pub bottle for £100 a year and £36 a fill - not too bad if you have the space for the bottle, but I really don't want a divorce

I've bought a 2kg extinguisher from H2O in Largs for £40 (quite dear, but if I'm getting refills a bit of goodwill will help) and a refill is £13 delivered.

The owner, Chris, said he'll also see about filling my german Aquamas 2kg bottle and I have another 2kg FE on order for £19.

Peter