In the women’s 20km race walk on Saturday, Team GB’s Johanna Jackson was disqualified due to a foot foul.
Jackson was omitted from the race for putting a foot out of place around the eight kilometre mark.
The 27-year-old who started race walking 10 years ago, finished 22nd in Beijing in 2008. The race was won by Russia’s Elena Lashmonova, with reigning champion Olga Kaniskina, who had led for the majority of the race, settling for second.
Freestyle swimmer Jo Jackson, from Northallerton, speaks about Team GB's kit unveiling at the Tower of London.
Sunderland striker Fraizer Campbell discusses the new Team GB football kit for the London 2012 Olympics.
Sunderland striker Fraizer Campbell shows off the new Great Britain kit ahead of the London Olympics.