Operation Fortress in Southampton this morning saw a total of 19 people arrested.
Two women and 17 men were all arrested on suspicion of drugs offences.
Police have recovered a quantity of drugs but investigations and tests are still on going.
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The Bishop of Salisbury has called the attack on Segei Skripal and his daughter Yulia "a violation of our community."
Thursday night's weather for the west of the region
Thursday night's weather for the east of the region