The undefeated 31-year-old, who has five wins from five, was contesting his sixth professional fight when he fell to the ground.
With suspected bleeding on the brain, the Zambia-born fighter was immediately taken to hospital where he was operated on.
The bout was being held at the Ring in Blackfriars, the first professional boxing to be staged at the venue in 73 years.
The remainder of the fights on the card were cancelled.
- Sports & Recreation