He made his professional debut in January 2024, putting in an all-action display when starting away to Exeter Chiefs in the Investec Champions Cup.

His first home outing came the following month, coming off the bench in the back-row in a 40-7 win over the Dragons at Scotstoun.

Hiddleston then scored his first try in Glasgow colours in March 2024, crossing the line in a 45-3 win away to the Scarlets.

An all-action display off the bench in round one of the 2024/25 season saw the hooker make an eye-catching 27 tackles in a 20-minute cameo away to Ulster, as well as frequently competing at the ruck.

The former Dumfries Saint’s all-action style frequently saw him amongst the top ball-carriers and try-scorers in the FOSROC Super Series, whilst his combative style at the breakdown also sees him act as a constant turnover threat.

Hiddleston also represented Scotland U20 alongside future Glasgow team-mates including Alex Samuel, Max Williamson and Euan Ferrie, and is also comfortable playing in the back-row if required.

He enjoyed a strong try-scoring streak in December 2025, scoring in successive victories over Sale Sharks, Toulouse and Edinburgh.