Rents halted a three-month decline in July, with the average UK rent rising by 1.1% to £925 a month, research by HomeLet showed.
London rents, however, continued the downward trajectory, falling for a fourth straight month. Rents in the capital fell by 0.6% on the year.
Brexit uncertainty is adding to issues of affordability and the impact of tax changes, with London acting as a brake on the overall market, HomeLet said.