29-05-2016 Police arresting a Millwall fan for fighting after league One victory over Millwall by Barnsley. Wembley Stadium, London © Connor Matheson

06-04-2008 Chinese security attempt to obstruct the media as Tibet demonstrators protest against the Olympic Flame which was part of the global Olympic Torch Relay in the run up to the Beijing Olympic Games. Dow... © Jess Hurd

29-08-2007 Young people taking part in Youth Service activity day at Lawrence Weston Youth Centre, Bristol. © Paul Box

29-08-2007 Young people taking part in Youth Service activity day at Lawrence Weston Youth Centre, Bristol. © Paul Box

19-02-2005 A motorcycle policeman escorts members of the Percy Hunt back to their stables the day after the hunting ban came into force in England and Wales. Alnwick, Northumberland, 19/2 2005. © Mark Pinder

15-09-1999 British Transport Police officers and Scotland Fans Kings Cross Station © Duncan Phillips

17-10-1979 Coventry 1979 Anti Apartheid protest Barbarians Rugby team. South African players protected by police pass through Anti Apartheid protest against the Rugby football Tour, Coundon Road Stadium. Stop Ra... © Peter Arkell

17-10-1979 Coventry 1979, Anti Apartheid protest Barbarians Rugby team, South African players protected by police pass through Anti Apartheid protest against the rugby football Tour, Coundon Road Stadium. Stop R... © Peter Arkell

20-06-1972 Royal Ascot races 1972 men in top hats, morning dress and women in hats arriving at Ascot racecourse, Berkshire © Peter Arkell

20-06-1972 Royal Ascot races 1972. men in top hats, morning dress with cigar and women in hats arriving at Ascot racecourse, Berkshire © Peter Arkell