I'm not sure that type of pool will be viable in the UK unless you're OK with very cold water. If you are you probably want to have a look at builds that incorporate insulation. Shallower pools are also easier to heat.
A conservation area in Exeter so I won't hold my breath! I spoke to a few manufacturers (Isotex, Thermomur, etc) about using insulated blocks for a pool and it's already a thing, but you need to use their wider products.
Where abouts?
I'm not sure that type of pool will be viable in the UK unless you're OK with very cold water. If you are you probably want to have a look at builds that incorporate insulation. Shallower pools are also easier to heat.