Career
He started his career at Carlisle United. A Carlisle United youth graduate, Hammell was promoted to the first team in 2014, being assigned #28 jersey. Hammell made his second appearance eight days later, playing the entire second half in a 0–3 home loss against York City.
After struggling to get in to the squad, Hammell went out on loan to his home town club Whitehaven.
After that expired, He went to Penrith on loan. On 10 March 2016, Hammell left Carlisle United by Mutual Consent.
On 11 March 2016, Hammell joined Northern Premier League Premier Division outfit Workington until the end of the 2015-2016 season.