A drinker had downed five pints of beer and some spirits before he punched a policeman in the city centre and knocked his helmet off.But Richard Shaw-Wallbank told Nottingham Magistrates Court that he believed his drinks had been spiked.The assault took place after officers were told by a cabbie that the 31-year-old had been hitting taxis on Beastmarket Hill at 4am. The court heard on Thursday that he works as an technician for a water company and came to Nottingham with his partner on April 16....
