A man and a woman have been charged with conspiracy to supply heroin, cocaine and skunk cannabis as well as offences under the Proceeds of Crime Act.
Rebecca Chin, 29 of Cookfield Close, Dunstable and Ali Adil Parvez, 30 of Easingwold Gardens, Luton were charged on Friday, 17 July.
Both appeared at Thames Magistrates Court on Saturday and were remanded in custody.
Four other men were bailed to return pending further enquiries.