Team GB remain third in the Olympic Games medal table with 40 in total after winning medals in cycling, equestrian jumping and gymnastics on Monday, and here we take a look at the top Brits in action on Tuesday.
ATHLETICS: Phillips Idowu
The saga of Beijing silver medallist Idowu's fitness and whereabouts has been fascinating or irritating depending on your point of view, but the so-called 'Invisible Man' will have no place to hide in triple jump qualifying.
BOXING: Andrew Selby
Barry flyweight Selby might be the world number one but he faces a mighty task to guarantee an Olympic medal when he faces slick Cuban Robeisy Ramirez Carrazana in their quarter-final bout. The Cuban has looked very impressive in the tournament so far.
CANOE SPRINT: Rachel Cawthorn
Cawthorn competes in the third heat of the women's K1 500 metres at 10.28am. The 23-year-old, from Guildford, Surrey, has won bronze at both the world and European championships in the event.
CYCLING: Sir Chris Hoy
On a day when Victoria Pendleton is set to retire, Hoy will bid for a sixth Olympic gold and seventh in all, both British records. The 36-year-old is world champion in the keirin, an event which to many is something of a lottery but appears almost a formality for the Scot.
EQUESTRIAN: Carl Hester
The 45-year-old stalwart of British dressage is riding in his fourth Olympics, but will have a career-crowning moment if he lands a team medal alongside Charlotte Dujardin and Laura Bechtolsheimer. Britain lead the team event, having never previously won an Olympic dressage medal.
HOCKEY: Matt Daly
Forward Daly has yet to open his account in the tournament despite an impressive record of a goal every three games at international level. And with Spain requiring a victory - GB only need to draw - to reach the semi-finals, he may get the additional space he needs to break his London 2012 duck.
SAILING: Nick Dempsey
The Athens 2004 bronze medallist hopes to go one better on home waters in the men's RS:X class. Dempsey sits second overall and cannot make gold so will be looking to keep rivals Toni Wilhelm and Przemyslaw Miarczynski at bay.
SYNCHRONISED SWIMMING: Jenna Randall and Olivia Federici
Randall and Federici will be the first Britons to compete in an Olympic synchronised swimming final since 1992 when they take part in the duet. The pair finished ninth in both the technical and free routines to book their place in the top 12 nations and advance to the final.
TRIATHLON: Alistair Brownlee
The 24-year-old Yorkshireman is the reigning world champion and the hot favourite for gold in Hyde Park, while his nearest rival could be his younger brother Jonny.