Matthew Langdown, 36 and of Severn Road in Ferndown, smuggled the items via an inmate and two people outside prison at HMP Guys Marsh in Shaftesbury.
Langdown was caught in April last year along with serving prisoner, Brian Grady, 39 and of no fixed abode, as well as Paul O’Shea, 43 and of Wick Road in Bristol, and Kady Griffin, 34 and of Goulston Walk in Bristol.
Matthew Langdown (Image: Avon and Somerset Police)
Between January and September 2023, Grady used his position in prison to arrange for contraband items to be smuggled by Langdown in protein power tubs to bypass security checks.
O’Shea and Griffin operated outside prison by providing Langdown with the items and taking payments from people known to inmates.
Police found that Langdown met either O’Shea or Griffin nine times across Dorset and Wiltshire.
Over £60,000 was found in Griffin and O’Shea’s bank accounts, from payments made by inmates.
Thousands of pounds were also found to have been paid to Langdown by O’Shea.
Langdown and O’Shea were arrested at their homes on September 26, 2023.
Officers found a protein powder tub at O’Shea’s home containing thousands of Pregabalin capsules, 22 smart phones, 20 sim cards, 20 charging cables and a 4G router.
These items are estimated to have a value of £90,000 and £190,000 in prison.
Langdown pleaded guilty to conspiring to convey prohibited articles into a prison, being concerned in the supply of cocaine, and misconduct in a public office.
He was jailed for four and a half years.
Grady pleaded guilty to conspiring to convey prohibited articles into a prison and was jailed for four years.
O’Shea admitted to conspiring to convey prohibited articles into a prison and was jailed for 23 months.
Griffin was convicted of conspiring to convey prohibited articles into a prison and was handed an 18-month sentence suspended for two years.
DI Tim Seaman, the senior investigating officer for Avon & Somerset Police’s Serious and Organised Crime Team, said: “This criminality created an illegal market within the prison which can create debt and fuel violence, it would have also undoubtedly facilitated ongoing criminal activity by other serving prisoners through use of illicit mobile telephones.
“Our investigations into organised crime do not stop at the prison gates.
“Where we identify corruption, we will relentlessly pursue those responsible and bring them to justice – Corrupt staff represent a very small minority, but their actions have a disproportionate and deeply damaging impact on the safety, integrity, and stability of our prisons.”