Yelloly made his Formula Renault 3.5 Series début at Silverstone for round seven of nine in the 2011 championship, driving for Pons Racing alongside Oliver Webb.

[11] In 2016 Yelloly made a switch to the Porsche Carrera Cup Germany series with the Project 1 Motorsport team, finishing the year as vice-champion of the rookie class and sixth place in the overall championship.

After showing good pace in the national series, Yelloly would make the full time move in to the Porsche Supercup for 2018 with the Fach Auto Tech team.

A season long battle with Michael Ammermüller and Thomas Preining saw the Brit take second in the championship, having secured wins at the support races for the Monaco and German Grand Prix.

[12][13][14] On 24 February 2019, BMW announced that Yelloly would be joining them as a works driver, taking part in his first race for the manufacturer in the China GT Championship in March.

Having taken part various rounds of the GT World Challenge Europe Endurance Cup from 2018 onwards, Yelloly competed in the series full-time with ROWE Racing during the 2022 campaign.

[24] Throughout the season opener at the 24 Hours of Daytona, technical issues would plague the outfit, which went on to finish 49th overall after an early hybrid system problem forced the Nr.

[25] The team bounced back in Sebring, where, having engaged in battles with other cars in the category for the majority of the race, Yelloly profited from a collision between the #10 Acura and the pair of Porsche 963s ahead to take second place, BMW's first podium in the GTP era.

[28] The race itself proved to be frantic, with Yelloly tapping the Acura of Tom Blomqvist into a spin at the first corner and keeping third place until the mandated driver change afterwards.

Teammate Connor De Phillippi fought for a spot on the podium for the remainder of the contest, eventually securing another runner-up finish after a late-race crash from Ricky Taylor.