Kevin Parle is suspected of murdering Lucy Hargreaves, 22, and Liam Kelly, 16, more than 20 years ago.
Matthew Slate, from north London, has been jailed for six years for running paedophile forums.
Two men are in jail after being caught smuggling drugs to an isolated river jetty.
Dilshad Shamo and Ali Khdir ran the "sophisticated and successful" operation from a car wash business.
The group is believed to hold the Vietnamese passports of those smuggled into the UK as debt bondage.
Henri Nikolli, 19, from Welwyn Garden City, is jailed for multiple drugs and firearms offences.
A judge tells Ramal Briem he should be deported to Iraq once he serves his sentence.
Europol said more than 450 officers from the UK, Germany and Belgium were involved in the operation.
The seizure "will have deprived organised criminals of millions in profits", the NCA said.
