Police swooped on industrial premises on Tuesday and their investigations continued there until today.
A spokesman for Avon & Somerset police said: “On Tuesday afternoon we executed a drugs warrant at an industrial premises on the Douglas Road Trading Estate.
“A large quantity of items, suspected to be drugs, were located inside the premises. Due to the amount of items seized, our inquiries continued at the location until today.
“As a result of our investigation, we arrested a 39-year-old man and a 19-year-old woman on suspicion of being concerned in the production of Class B drugs. Both have been released on police bail, pending further inquiries.
“We would like to take this opportunity to thank members of the public who continue to be our eyes and ears in our local communities.”
Anyone wishing to report a crime can call us on 101 or Crimestoppers on 0800 555 111 where information can be left anonymously.