[5] Accidental Agent's dam Roodle showed modest ability on the track, winning two minor races for the Johnson Houghtons from 16 attempts.

Eighteen days later at Chepstow Racecourse he started at odds of 9/2 for a similar event and recorded his first success, as he took the lead approaching the final furlong and won by one and three quarter lengths from Highland Lotus.

[10] Later that month he was stepped up to Listed class for the Dubai Duty Free Cup over seven furlongs at Newbury Racecourse in which he started a 16/1 outsider and finished strongly to take second place, a neck behind the four-year-old Tabarrak.

After being restrained towards the rear by Bishop in the early stages he took the lead inside the final furlong and held off the late challenge of the four-year-old Lord Glitters to win by half a length.

[11] Two weeks later he came home fourth behind Lord Glitters in the one-mile Balmoral Handicap at the same track when attempting to concede five pounds to his older rival.

On his final appearance of the year he started favourite for the Listed Hyde Stakes at Kempton in November but ran poorly and finished unplaced.

After racing towards the rear as Deauville set the pace, Accidental Agent began to make progress in the last quarter mile and joined the leaders in the final furlong.

"[13] In August Accidental Agent was sent to France to contest the Prix Jacques Le Marois over 1600 metres at Deauville Racecourse but never recovered from a poor start and came home eleventh of the twelve runners in a race won by Alpha Centauri.

On 19 June he returned to Royal Ascot to attempt to win the Queen Anne Stakes for a second time but took no part in the race after refusing to start when the stalls opened.

Accidental Agent returned to the track on 19 October when he came home eleventh of the twelve runners behind King of Change in the Queen Elizabeth II Stakes at Ascot.

[15] The 2020 flat racing season in England and Ireland was disrupted by the COVID-19 pandemic and Accidental Agent did not make his reappearance until 16 June when he contested his third Queen Anne Stakes and ran rather better that his 100/1 odds indicated as he finished fifth behind Circus Maximus.