Karl Richter, 52, from Clase was part of gang planning to smuggle 600kg of cocaine on yacht during transatlantic race before turning to cannabis imports.
Morgan Edwards, 20, modified his VW Golf and drove at 130mph before crashing in Bangor, seriously injuring two passengers. He has been jailed for 28 months and banned from driving for 50 months.
Two people have been jailed for possessing crack cocaine with intent to supply after being caught by plain-clothed officers in Grangetown.
Jonathan Carver threatened his driver with a beer bottle and caused £213 worth of damage after being unable to pay his fare in Pontypool.
A 37-year-old university student has been sentenced to 3 years and 3 months in prison for supplying Class A drugs to fellow students and theft.
John Smith, 33, from Neath, was caught with a burner phone containing messages about cocaine deals after being stopped by police in Briton Ferry.
Kade Wren, 21, threatened to knife a 69-year-old cyclist and stole his bike after taking exception to a friendly greeting at Newport waterfront.
Harley Mathews strangled his 32-weeks-pregnant partner after wrongly accusing her of cheating, Cardiff Crown Court heard.
Keira Richards, 18, threatened to kill a woman with glass, assaulted police officers and caused criminal damage across Barry over two years.
Conner Gough, 33, sentenced to 18 months after year-long harassment campaign culminated in violent assault involving strangulation and death threats.
Christopher Jones, 55, from Swansea Docks has been sentenced to 28 months in prison after pleading guilty to attempting to incite a child to engage in sexual activity online.
Craig Berry, 39, sentenced to 32 months in prison after admitting violent offences including assault, strangulation and making threats to kill against a woman in Denbighshire.