Propane is the best performing gas in colder weather and has the most variety in bottle sizes but any of them will work.
Be aware that each type uses a different regulator but the hose and clips will be the same for all. Here are your options:
- propane regulator for the UK: https://gasproducts.co.uk/reca-37-mbar-low-pressure-propane-gas-regulator.html
- butane regulator for England, Scotland & Wales: https://gasproducts.co.uk/gas-regulators/butane-gas-regulators-low-pressure/reca-21mm-low-pressure-butane-gas-regulator.html
- butane regulator for Northern ireland & the Republic of Ireland: https://gasproducts.co.uk/kosan-jumbo-clip-on-butane-gas-regulator.html
- patio gas regulator for the UK & the Republic of Ireland: https://gasproducts.co.uk/reca-patio-gas-37-mbar-low-pressure-propane-gas-regulator.html
The hose required is: https://gasproducts.co.uk/8-3mm-lpg-high-pressure-gas-hose.html (Hose is sold by the metre, average length for use with boiling rings is 1-2 metres)
The clips needed are: https://gasproducts.co.uk/jubilee-hose-clip-m00.html