 Clamp also played four times for the England national football team, including three matches in the 1958 FIFA World Cup, after making his debut just before the tournament in a friendly draw in Russia on 18 May before 102,000 spectators.His mother, Sarah, was Wolverhampton Wanderers' laundry lady for some 30 years beginning in the 1950s before retiring in the 1980s.She outlived her son by 11 years, dying in November 2006 at the age of 94.