Stay informed with free updatesSimply sign up to the UK property myFT Digest -- delivered directly to your inbox.UK rents rose by a record 9 per cent last month despite stagnant house prices, as higher borrowing costs squeezed both landlords and tenants.The figures for February marked the biggest annual percentage change since the Office for National Statistics began collecting UK rent data in 2015. They compared with an 8.5 per cent rise for January.Wednesday’s ONS statistics identified London as the English region with both the most expensive rent, at an...