silverlady, Don't do anything until you have contacted the energy efficiency department at the appropriate Council offices that serve the area you are moving to.
If you are of pensionable age,` you will probably qualify for a part / full grant to have the property upgraded to " decent homes " standard. This involves upgrading the heating system, and any insulation upgrading that may be required.
( one storageheater serving the whole property definately would not qualify as decent homes standard ).
Hope this helps.