What’s going on in the London lettings market?  Rents have risen much more sharply than house prices over the past few years, and threatened tax increases could force more buy-to-let landlords to leave the market, leading to even tighter supply.  We look at the impacts on exclusive Notting Hill, and its more affordable west London neighbour Shepherds Bush.  Property commentator Anne Ashworth hears from Winkworth’s Charles Erwin, Lucinda Richardson from the Notting Hill office and Rupal Patel of Winkworth Shepherds Bush.