A third man has been arrested on suspicion of murdering antiques dealer Robyn Mercer.

A 25-year-old man is currently in custody after an arrest this morning.

Ms Mercer was found bludgeoned to death outside her home in West Molesey last Monday.

A murder investigation was launched after her body was discovered by a member of the public in Abbey Walk, Walton Road at about 8am on March 14.

A post-mortem examination into her death found she died from multiple blows to the head.

Ms Mercer was a partner at the prestigious, family-owned independent antiques dealer, JH Bourdon-Smith in Masons Yard, London.

Relatives of the 50-year-old released a statement last week.

It read: "We are all utterly devastated to have lost Robyn. She was a wonderful person, loving mother and devoted friend.

"Thank you to all our friends and family for their love and support.

"We would appreciate privacy at this difficult time."

A 52-year-old man arrested on March 14 was bailed until Thursday, April 14, and a 25-year-old man arrested on March 17 was bailed until Friday, May 20.

Surrey Police said the investigation is ongoing.