Monthly rental growth remained unchanged across the UK in April, ONS data shows, but rent prices were up annually and there are warnings that large increases are on their way.

The ONS Index of Private Housing Rental Prices found average UK rents rose on a yearly basis by 1.2% in April, or 1.5% when London was excluded.

Rents in England grew by 1.2% annually, Wales experienced growth of 1.1%, while in Scotland private rental prices increased by 0.7% in the 12 months to April.

Kate Davies, executive director of the Intermediary Mortgage Lenders Association (IMLA), said: “Rental prices continue to be subdued and below the rate of consumer price inflation across much of the UK.

“Given that landlords have now started to feel the effects of income tax changes in their most recent tax bills, it is perhaps surprising that stronger pressure to increase rental prices has not yet materialised.

“IMLA continues to believe that weaker investment by landlords will affect rental availability and eventually result in higher rental costs, which will make saving for a deposit harder for tenants who are hoping to get on the housing ladder.

“We will continue to argue that no additional measures that risk further eroding the health of the private rental sector should be introduced, and that the number of available rental properties does not decrease still further.”