The test centre with the lowest pass rate of all is at Heaton in Bradford where only 27.1 per cent of candidates pass, followed by the Kings Heath centre in Birmingham where the pass rate is just 30.1 per cent. A spokesman for the DSA said the variation was due to some drivers being more prepared for their test than others. He said: "The wealthier the area, the more money budding motorists have to spend on lessons." He said that L-test examiners were trained to ensure test consistency across the country.