Officers take part in a high-speed pursuit of a suspected drink driver who tries to ram the interceptors off the road. With the chase hurtling towards Northampton town centre, packed with late-night revellers, the runaway takes one risk too many, jumps a red light, crashes and comes to a halt. Callum and Chris chase after a gang from London suspected to have raided a rival's cannabis farm, while Harrison and Tanya catch a repeat disqualified motorist up to his old tricks again, resulting in him being sent back to prison