If you have solid walls with no cavity you could cut your heating costs considerably by having us fit internal wall insulation, solid walls let through twice as much heat as cavity walls do. This is because solid walls have no gap, so the heat can travel straight through the brick work.
The insulation boards we use are mechanically fixed to the internal walls of the building and the plastered over ready for decorating. Insulation boards come in different thicknesses and have higher insulation values the thicker they get.
Another plus with the insulation boards we use is they can cure condensation and mould problems in rooms which have cold walls.