Peaty’s time of 55.41 beat the previous record of 55.49 which he set last week during the semi-finals.
In a thrilling climax to the event, Peaty also set a new 50m Breaststroke British record of 25.41 in the first round of the breaststroke 'skins'.
London Roar, which also includes Loughborough swimmers Marie Wattal, Luke Greenbank, and Andreas Vazaios, finished the competition in third place on 391 points, ahead of LA Current on 298.
Marie Wattal continued her recent fine form as the Women’s 4x100m Medley Relay side touched the wall in a time of 3:45.14, securing second place.
Wattal also impressed in the Women’s 4x100m Freestyle, as Roar finished in the top three with a time of 3:27.17. Marie secured further points for the franchise in the Women’s 100m Butterfly, taking fourth place in 55.72.
Elsewhere, Luke Greenbank’s time of 1:48.65 in the Men’s 200m Backstroke secured a new British record as his finished in fourth. He also helped the Men’s 4x100m Medley Relay into fifth place with a time of 3:22.83
Loughborough’s Andreas Vazaios also banked further points for Roar as he turned on the style in the Men’s 200m Individual Medley, taking second place (1:51.84).
The Greece international also finished fourth in the Men’s 200m Butterfly (1:51.83) and a respectable fifth in the Men’s 100m Individual Medley with a time of 52.34.
Cali Condors 561 points
Energy Standard 464.5 points
London Roar 391 points
LA Current 298 points
This weekend’s action concluded the International Swimming League for 2020. The event saw several impressive performances from Loughborough-based swimmers throughout which can also be relived here and here.