Hi Sara, I wouldn't recommend electric underfloor heating in your current situation, although you will have extra space, you will still suffer with a delay in the reheat of your property.

Underfloor heating is designed to maintain a more constant temperature over a long period of time, if you work away during the week then it sounds as though you need more instant heat.

I appreciate that the storage heaters take up a lot of room and not only that are massively inefficient. I would recommend either electric convector heaters of a central heating system which which is heated by an electric boiler.

Depends on your property layout and current electrical installation. I hope this help you.

Apart from underfloor heating, you have two other options:

1. Have the storage heaters removed and replaced with panel convector heaters. I would highly recommend the Stiebel Eltron range:

https://www.stiebel-eltron.co.uk/en/products-solutions/central_heating/electrical_heaters/convector_heaters.html

An electrician could move the circuits for the existing storage heaters from the off-peak supply and connect them to the general supply so that you can switch your heaters on and off whenever you please 24/7/365.

2. Your second option is an electric combi-boiler. This system looks like, and ultimately does exactly what a gas boiler does ..... supplies hot water to radiators throughout your home. The installation costs of this system could be prohibitive though, as you will require the services of a plumber or heating engineer as well as an electrician. Option one would definitely be the cheaper of the two.

hi sara,
I wouldn't recommend electric underfloor heating in all rooms.it is expensive to run and if the element breaks down you have no heating at all.you could go for a panel heater in the bedroom as you can get them with timers on but would need storage heaters in other rooms.i would recommend looking in to electric boiler so you would have radiators.hope this helps.
andrew