[3] Harry Angel's dam Beatrix Potter showed very limited racing ability managing two-second places in fifteen starts.

[6] On his first run of 2017 Harry Angel finished second in the Pavilion Stakes at Ascot Racecourse on 3 May, beaten one and a half lengths by the Godolphin colt Blue Point, to whom he was conceding four pounds in weight.

He led from the start and pulled clear in the final furlong to win by four and half lengths from the Spring Cup winner Second Thought.

The Group 1 Commonwealth Cup at Royal Ascot in June saw Harry Angel again matched against Blue Point and the colts started second and third in the betting behind the undefeated Irish challenger Caravaggio.

Harry Angel led the race from the start and turned back the challenge of Blue Point but was overtaken by Caravaggio in the closing stages and beaten three-quarters of a length into second.

Kirby positioned the colt in second behind the pacemaker Intelligence Cross before going to the front approaching the final furlong and Harry Angel kept on well to win by one and a quarter lengths from Limato, with Brando taking third ahead of Caravaggio.

His opponents included, Tasleet, The Tin Man, Brando (who had won the Prix Maurice de Gheest in August) and Blue Point as well as Magical Memory (Stewards' Cup) and Queen Kindly (Lowther Stakes).

[10] Cox explained that he had been worried by the state of the ground and had only made the final decision to run the colt half an hour before the race.

Ridden by Kirby he took the lead in the last quarter mile and won by two lengths from Brando, winner of his previous start in the Group 3 Abernant Stakes.

[12] At Royal Ascot in the following month he was made favourite for the Diamond Jubilee Stakes but his run of bad luck at the course continued as he went lame during the race and finished unplaced.