Harry progressed through the Academy ranks at Exeter City after joining them at the age of 11, and while still an under-16 player, he was an unused substitute 29 times during the 2020-2021 season.
In the summer of 2021, he agreed professional scholarship terms when progressing into the under-18s setup, and continued his first-team trajectory during the early months of the 2021-2022 season by making two appearances and being named an unused substitute 13 times.
In October 2021, he joined Southern League Premier Division South side Dorchester Town on a one-month loan deal and made three appearances before being recalled two weeks early.
Back with Exeter, he made one appearance and was an unused substitute once for the Grecians.
In December 2021, the young keeper made two appearances for Dorchester Town after signing for another month’s loan.
In March 2022, he joined Western League Premier Division side Tavistock AFC for two weeks as goalkeeper cover, appearing twice for the Devon club.
Harry penned his first professional contract with Exeter in March 2022, and was an unused substitute twice for their first-team during the opening weeks of the 2022-2023 season.
To gain more exposure to senior football, he returned to Dorchester Town on a one-month loan in August 2022 which was later extended until the end of the season. At Dorch, he made 13 appearances and kept four clean sheets before being recalled in October 2022 by his parent club due to goalkeeping injuries.
Back at St James’ Park, he made a further two appearances and kept one clean sheet, being named on the bench 13 times as an unused substitute during this stint.
In February 2023, he joined Southern League Premier Division South side Plymouth Parkway on loan until the end of the season. He took his chance at Plymouth with both hands, keeping six clean sheets in 11 games before being recalled by Exeter six weeks into his loan spell.
Back at Exeter, he filled the goalkeeper spot on their bench six times to end a strong 2022-2023 season for the shot-stopper.
Harry joined the Seagulls on a long-term loan in July 2023.