A 34-year-old man from Cornwall has received a 21-year custodial sentence for a violent 2021 armed robbery targeting a local Falmouth supermarket, concluding a months-long legal process that unfolded in England’s High Court. Tristan Armstrong was handed down the penalty on Friday, weeks after a judge-only trial found him guilty on two serious criminal charges: aggravated robbery and illegal possession of a firearm and matching ammunition.
Court documents and witness testimony laid out the timeline of the botched October 2021 heist. The incident began when Armstrong intercepted the owner of Bailey’s Supermarket as the owner arrived at the store to open for the day’s business. In a threatening move, Armstrong drew a loaded firearm and aimed it directly at the shop owner, demanding access to the store’s cash reserves.
In a moment that dramatically reversed the course of the attack, the supermarket owner was able to retrieve his own legally held firearm and fire at Armstrong, striking the robber multiple times. Wounded and unable to escape the area immediately, Armstrong fled the scene and hid inside an unoccupied abandoned property in the nearby Piccadilly district, where law enforcement officers later located him still suffering from his gunshot injuries.
Unlike most criminal trials in the UK, Armstrong’s case was heard and decided by a judge sitting without a jury, a procedure permitted under specific legal provisions in England and Wales. The bench delivered its guilty verdict in July this year, setting the stage for Friday’s sentencing hearing. Legal guidelines note that the combined offences Armstrong was convicted of carry a maximum possible sentence of 35 years behind bars, meaning the 21-year term handed down represents a substantial penalty that reflects the severity of the violent crime.