Two Birmingham men have been jailed for more than 20 years after police found heroin being cut “on an industrial scale”.

Officers found more than six kilogrammes of heroin plus bags of caffeine, a common drugs mixing agent, drugs presses and a large electric mixer at the address in St Saviours Road, Alum Rock in May last year.

Mohammed Tanvir who was being tracked by police on suspicion of running a drug supply chain had stepped from the property moments earlier, while Mohammed Sirfraz was found inside hovering powder from a bedroom floor.

Tanvir from Aston, was already under investigation after police found a holdall containing another six kilos of heroin dumped in bushes off Cherry Orchard Road in Handsworth Wood on 19 April.

The driver of a VW Passat who made off after ramming a police car was seen running from the hedgerow, moments earlier and Tanvir detained from a van nearby.

Analysis of a mobile phone seized from the 33-year-old showed it had been in contact with another number in a handset consistent with the movements of the Passat.

Both went on to admit possessing Class A drugs with intent to supply and at Birmingham Crown Court on 6 March Tanvir was jailed for 13.5-years and 43-year-old Sirfraz, of no fixed address, handed an 8-year prison sentence.

West Midlands Police Detective Chief Inspector Ronan Tyrer, said: “Officers found several large bags of caffeine in the property alongside heroin and large electric mixing equipment; it’s clear they were cutting drugs on an industrial scale.

“Tanvir in particular was involved in a significant heroin supply chain and profiting from the misery of others. These are significant convictions and underlines that anyone involved in drug dealing can expect to spend many years behind bars.”

Anyone who suspects someone of drug dealing or associated crime is urged to call the charity Crimestoppers anonymously on 0800 555111. Calls can’t be traced and callers won’t be asked for their name.