Wheeler-Henry spent six years at Chelsea before joining Brentford permanently ahead of this season, following a successful loan spell with the Bees during the second half of the 2025/26 campaign.
His time at Cobham gave him the opportunity to train against some of the academy's brightest talents, while his unusual combination of speed and throwing ability added another dimension to his game.
The right-back's long throw developed from his background in athletics.
Wheeler-Henry competed in the 100 and 200 metres and also took part in javelin and discus before football eventually became his priority.
"I used to do javelin and discus, and I could throw it quite far," he said.
"I took throw-ins at Sunday league and realised I could really launch them. I used to smash it at the keeper, and it would bounce in; that's when I realised I had a good throw."
That ability became particularly useful during his time at Chelsea.
Whenever the first team were preparing to face Brentford, Wheeler-Henry was brought in to replicate the Bees' long-throw threat in training.
"I used to take them for the first team whenever they were training ahead of Brentford," he said.
"They needed me to take them, and they used to be quite loopy so the set-piece coach at Chelsea, Bernardo Cueva, previously of Brentford, taught me how to do a flat one."
The experience gave Wheeler-Henry a glimpse of first-team football while he continued his development within Chelsea's academy.
He also found himself competing against players who would go on to make their own breakthroughs, with the intensity of the environment forcing him to improve.
"There are a lot of people fighting for their position. They buy a lot of their players as well, so you've always got to be switched on," he said.
"Rio Ngumoha or Ryan McAidoo really stood out in one v ones against them. They tested me a lot in training and that helped me in the long run."
Wheeler-Henry also credited Shim Mheuka and Kobe Barbour with helping develop his defensive game.
Despite the education he received at Chelsea, the defender eventually opted to continue his career elsewhere after his loan spell at Brentford.
The move became permanent after he felt a strong connection with the Bees during his time there and believed their style suited his strengths.
"I really felt the love from the coaches and players when I came here on loan; they welcomed me in," Wheeler-Henry said.
"The style of football definitely suits me, even without the long throw, because it maximises my ability."
That relationship with Brentford ultimately helped persuade him that a permanent move was the right next step after six years at Chelsea.
The 20-year-old is now continuing his development with Brentford B, where his pace, versatility and long throw remain important parts of his game.