Police have seized more than 780 cannabis plants in Thornbury.

The plants, estimated to be worth in excess of £780,000 in potential street value, were discovered in two industrial units on Sunday afternoon.

Information provided by a member of the public led officers to Short Way industrial estate, where 786 plants were found.

Upon investigating the area, officers could smell what they believed to be cannabis and could also hear a low humming noise from one of the units. A closer inspection found a door slightly open which revealed a large amount of cannabis plants.

Further searches identified a second unit to also be containing cannabis plants.

No arrests have yet been made and enquiries are ongoing.

South Gloucestershire Neighbourhood Inspector, Clive Summerill, said: “This is another important find and we are committed to identifying those responsible for cultivating this significant amount of cannabis.

“The amount seized is clearly not for personal use and the suspects are organised criminals who we believe are exploiting vulnerable people as part of their operation.

“This is a real blow to the criminals and our message is clear – we will use all of our resources to identify, arrest and convict you and we will not stop in our efforts in preventing these drugs getting onto the streets of our local communities where they can and do cause serious harm.

“As always, we are really grateful for information provided to us by members of the public and encourage anyone who might be able to help with our investigation to get in touch.”

The news comes just days after cannabis was seized following searches carried out in the underpass near Tesco.

More than 1,000 cannabis plants with a potential street value of more than £1.1m were seized from an industrial unit in Kingswood last month.

Following the discovery police have issued a list of signs that may suggest cannabis is being grown. These include a strong vegetable smell, windows covered from the inside with plastic or polythene, condensation on windows and houses appearing unoccupied or have their curtains always drawn or whose tenants who do not engage with their neighbours.