Police were called to Roffey Close on Tuesday when a man in his 20s was found with a single stab wound on a grassed area around 10.20pm.
The man was approached from behind and thrown from his bike to the ground by two men wearing balaclavas. He was then believed to have been dragged along the ground before being stabbed.
Two men were seen making off from the scene towards the recreation area near Sangers Walk shortly afterwards.
The victim was taken to hospital where he remains in a serious but stable condition.
Enquiries are continuing, and police are appealing to anyone who witnessed the attack, or who has any dashcam or doorbell camera footage or any other information, to come forward.
Detective Constable Hannah Simmonds said: “Our enquiries into this continue, and we are appealing for anyone with information to speak to us. At this time, we currently believe this to be an isolated incident.”
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