No gas, any better alternatives to alcock radiators

One idea although a fairly expensive set up would be a solar panel and battery storage package running an air/ground source heat pump which would feed a conventional style heating system. Radiators or underfloor would be great with this option just your preference. Only downside with the above other than the complete cost of the installation would be space required to house battery, water storage tank and heat pump.

F your putting P V on your Roof you could fit a electric combi boiler ( elnor do good ones and this wild work like a gas boiler but at a less cost if it’s set up right .

A oil boiler with underfloor heating would be a good option to keep costs down

Your best option would be to fit an electric stick boiler, running a conventional wet heating system with low water content radiators. You could then add a few solar panels and iboost inverter to run an immersion for hot water. This setup would allow you to add more solar panels and battery storage at a later date to reduce your reliance on incoming grid supply I would advise you avoid heat pumps unless your house is extremely well insulated, airtight and has modern double glazing, heat pumps use a lot of electricity to run and if they are heating a leaky and poorly insulated house you might find it actually costs you more as it will be running near constantly. Many thanks OD Plumbing & Heating LTD