If you are contemplating buying your rental property maybe see if the landlord wants to give you a rebate on the rent, there could be tax advantages from this e.g. lets say you'll have paid £10k in rent year to date, in terms of actual money in his pocket it may work out less when he has to do a tax return. So maybe you can come to some arrangement on price that is beneficial for everyone....
^Disclaimer: I can't guarentee the above is squeaky-clean from a legal perspective.
^Disclaimer: I can't guarentee the above is squeaky-clean from a legal perspective.