Originally Posted by is_that_so
It is actually a management company problem because you don't own the attic, nor does the landlord under leasehold, they do and their upkeep is part of their remit. Get the name of someone in the management company and hound them. In the meantime some cheap heaters might be the way to go.
With respect, an OMC won't take instruction from a tenant. They'd need to hear it via the landlord. Your LL probably knows this and is just fobbing you off.
The OMC will only act if a significant proportion of their members (the owners) ask for something. Then if the spend is outside their budget they would probably only seek to include it in next years budget if the members voted on the matter at the AGM.
If you want to stay long term, possibly the best thing to do is try to make friends with owner occupier neighbours and plant the seed about better insulation reducing everyones bills. Get the item on the OMCs agenda.
Nothing will happen quickly, thats for sure.