Following a search warrant, 28-year-old Edward Oseitutu, 31 year old Gareth Owusu and 41-year-old Natalie Smither have all been arrested.
Oseitutu and Owusu have been remanded in custody and Smither has been bailed with conditions.
Three other people were also arrested on suspicion of conspiracy to supply class A drugs but have been released under conditional bail.
