Has anyone done the figures contrasting running costs of oil or LPG in
a big tank for central heating?

Place we may be moving to has no gas, it was oil back in the 1980's
but the current owner has totally destroyed the C/H system - cut off
copper pipes flush with the solid floors - and installed wall mounted
electric convector heaters "oh they don't cost much to run at all" -
now do I believe that ! Also they are all on the 1970's ring mains so
no doubt grossly overloaded. As it's going to be a total strip out and
refurbish I will probably put a wet system in and fully re-wire but
which fuel is the best choice - no problems with siting tanks as it's
a large plot.

AWEM