The Paragon Mortgages September buy-to-let index reveals rents increased in seven UK regions. Rental incomes in both the North West and East Anglia rose by over 3 per cent to £7,009 and £8,854 respectively. Overall, rents were almost unchanged nationally, standing in August at £9.524 compared with £9,598 in July. Property values have also risen in August across eight out of the ten regions with Wales showing the highest increase of 11.06 per cent to £126,576. As a result of these rises, yields have slipped to 6.7 per cent gross from investment properties, compared with 7 per cent in July.