Reddit reviews tesa UK Thermocover Insulating Film for Windows 4 m x 1.5 m (max) - Transparent

This is the stuff we used.

http://www.amazon.co.uk/gp/aw/d/B0038JE7X6?pc_redir=1408121456&robot_redir=1

It will take 2 people to make a decent job of it, but once it's up you barely notice it's there.

Do this. Having a constant low heat throughout the house will warm it more efficiently than a two hour blast twice a day.

Alternatively, the three of you could invest in a £15 electric heater each and take the heating out of your landlord's hands.

Little tips and tricks would also include hanging blankets or quilt covers up at doorways to minimise draughts, making stews and slow roasting meat joints and casseroles will keep a heat source in your kitchen for hours at a time, invest in hot water bottles (if you go to Poundland, they have neck-shaped ones in the stores near me. Assuming it's a nationwide trend, your Poundland should have some), if you have a communal area, dump a load of fleece blankets in there to sit under, keep your curtains closed, ask your landlord if you can seal any window draughts with temporary plastic glazing...and get the hot drinks in and a toasted sandwich maker for hot cheap fast snacks.

We're a family of four in a three bed semi-detached and can very easily keep the place warm all month for £90 on top of our normal summertime usage, using electric alone. For how little heating he's letting you have on, he's takign the piss. We run a 1kw electric heater in the living room for appx 6 hours a day and a 400w halogen heater permanently on in the main hallway to keep the stairwell heated because there's a LOT of cold space there that keeps the entire house freezing if we don't heat it up.