The Beijing golden girl will be defending the first of her two gold medals in the S6 400m freestyle. Heats commencing at 10.06 and the final is at 17.50. US world record holder Victoria Arlen will rival her.
Sam and Joe Ingram
The only judo medallist in Beijing (bronze), Sam Ingram looks to improve in the -90kg, beginning at 11.00 at the ExCeL, while brother Joe starts at the same time in the +100kg, but faces stiff competition from Brazilian favourite Antonio Tenorio
Defending champions Ukraine take on US at 14.00 at the Riverbank Arena, after silver medallists Russia face Argentina at 09.00. GB begin their campaign against Beijing semi-finalists Brazil at 16.15, hoping to improve on their seventh-placed finish in 2008.
Before hopefully competing in the T44 100m final at 21.32 (qualification today at 19.33), Beijing 200m bronze medallist Reid will appear in the F44 long jump final at 11.00, with Australian Kelly Cartwright providing the main rivalry for the 27-year-old.
After claiming a silver medal in Beijing, the 22-year-old visually impaired sprinter from Edinburgh will be looking to go one better in the T12 100m final at 19.54. Preliminaries begin at 10.15 and include Spanish arch-rival Eva Ngui.
Defending gold medallist Aggar, 28, is Britain's main hope in the single sculls ASM1x and hopes to be in the final at 09.50. He began the heats yesterday with a personal best, with Cheng Huang of China his main rival.