Lidl (UK) GMBH v Janet Ryder (Valuation Officer) [2013] UKUT 348 (LC)

Generally an increase in competition would have a depreciating effect on rental value. A valuation officer had therefore underestimated the adverse effect the presence of four supermarkets in a town might have on another supermarket when she had adopted the approach that the competition demonstrated a greater demand for space which would increase the value.