Police have launched a murder investigation after Sir Richard Sutton, an aristrocratic businessman in his 80s, was found fatally injured at his country estate near Gillingham, Dorset, police said.
A man has been arrested in London and nobody else is being sought over the killing.
“A 34-year-old man from the Gillingham area was arrested on suspicion of murder and was subsequently taken to hospital for treatment to injuries that are not believed to be life-threatening,” Dorset police said.
The arrested man and Sir Richard were known to each other, police said.
The arrest was made when a vehicle believed to be linked to the incident was tracked heading east on the A303 and eventually stopped in Hammersmith in London, police said.
A woman in her 60s, named in reports as Sir Richard‘s wife, was critically injured in the incident and was airlifted to Southmead Hospital in Bristol.
Sir Richard was one of the UK’s wealthiest people and featured in the Sunday Times Rich List in 2017 with assets valued at over £200m.
He had an extensive property and farming portfolio, including the 6,500-acre Benham Estate in Berkshire and the Stainton Estate in Lincolnshire.