Team GB added to their medal haul on Thursday with golds in the dressage, women's boxing and taekwondo. Here we take a look at the top Britons in action on Friday.
ATHLETICS: Lisa Dobriskey
A matter of months after being diagnosed with potentially life-threatening blood clots on her lungs, a rejuvenated Dobriskey will bid to cap an extraordinary comeback by winning a medal in the 1,500 metres.
BOXING: Anthony Joshua
London's Joshua will book his place in the super-heavyweight boxing final if he can chop down 6ft 9ins Kazakh Ivan Dychko at ExCeL. Joshua's hard-punching last-eight win over China's Zhilei Zhang makes him favourite.
CANOEING: Ed McKeever
Gold medal prospect McKeever, 28, from Bradford-on-Avon, Wiltshire, races in the men's 200m single kayak heats at 9.37am.
CYCLING BMX: Shanaze Reade
The 23-year-old from Crewe qualified fifth fastest for the semi-finals as she prepared to put her Olympic heartbreak firmly in the past. Three-time world champion Reade crashed out at the final corner attempting a gold-medal-or-bust manoeuvre in Beijing four years ago.
DIVING: Tom Daley
Teenager Daley returns to action to resume his battle with world platform champion Qiu Bo. Daley, contesting preliminaries, famously beat Bo to win the world crown in 2009 but the Chinese has had the upper hand since.
HOCKEY: Alex Danson
With a bronze medal still to play for, the women's team have to pick themselves up from their semi-final defeat. And with coach Danny Kerry urging them to be more clinical in the circle, the responsibility is likely to fall on striker Danson, who scored her fourth goal of the tournament in the last-four loss to Argentina.
SAILING: Hannah Mills and Saskia Clark
The pair have made remarkable progress since teaming up early last year. They are all but guaranteed to win at least silver and gold will be theirs if they finish the medal race ahead of New Zealand's Jo Aleh and Olivia Powrie.
TAEKWONDO: Sarah Stevenson (under-67kg) & Lutalo Muhammad (under-80kg)
Stevenson won World Championship gold last year but tragically lost both parents, and then recovered from a serious knee injury to make London 2012. The 2008 Beijing bronze medallist insists there can be no sentiment in her bid for Olympic glory.