Sunderland achieves the highest buy-to-let yields at 5.3%, according to new research by Rentround.
Liverpool followed recording yields of 5.22% and Blackpool with yields of 4.58%
However both Sunderland and Liverpool have experienced reductions in their average rental yields between the lockdowns.
Yields in Sunderland dropped by 0.37%, while in Liverpool yields declined by 0.4%.
In contrast, parts of London have maintained strong rental yields with East Ham recording the best at 4.81%.
Catherine Shinerock, head of marketing and customer support for Advanced Rent Option, said: “Despite the lockdowns, BTL investors are still experiencing healthy yields, with Sunderland and Liverpool offering some of the best yields in the UK and excellent occupancy rates.
“Liverpool is experiencing a booming BTL market, with demand for high-end, quality rental accommodation outstripping supply.
“The city has one of the largest universities in the UK and an increasing student population, combined with rising graduate job opportunities.”