A cosmetic surgeon from Birmingham secretly filmed having sexual encounters with a German dominatrix at work has been banned for a year.

Dr Tony Walker, aged 53, of Kings Norton, was reprimanded for “wholly unacceptable conduct” by the General Medical Council (GMC).

The father-of-two was suspended from the medical register for 12 months. He escaped being struck off as a GMC panel took account of his impeccable record as a doctor and deemed there was no significant risk of him repeating the behaviour.

Walker admitted charges of engaging in sexual activity in the presence of German-born Marion Burton, known as Mistress J, sending her a string of sexual text messages and being convicted for assaulting his wife Yvonne.

The botox specialist was secretly filmed by his patient, 51-year-old Mrs Burton, at his private Chatsworth Clinic, in Maidenhead, Berkshire, in 2008, the GMC hearing in Manchester was told.

Mrs Burton, who earns up to £5,000 a month and has clients said to be politicians and rugby players, said she filmed the doctor from a camera in her handbag to expose him to the authorities.

In September 2009, Mrs Burton was cleared by a jury of blackmailing Walker by allegedly demanding £20,000. Her husband Terry Burton pleaded guilty to blackmail and was jailed for three and a half years.

A GMC spokesman told Walker: “You were willing to be over familiar with the patient, you proactively crossed the boundary of the doctor/patient relationship and engaged in sexual activities.

“At no time did you seek to establish or re-establish professional boundaries. Instead you escalated the sexual activities.

“The patient appears to have had a financial motive in this matter.

"This does not mean that you are not held accountable for what happened. It is always your duty as a doctor to maintain your professional relationships with patients, come what may.”

During the hearing, Walker said he was “ashamed”, had “acted atrociously” to his wife and children and would never do anything similar again.

Walker has worked at Selly Oak Hospital and Birmingham Women’s Hospital, Ashtree Medical Centre, Stirchley, and Bartley Green Medical Practice.

He was also a locum for Winyates Health Centre in Redditch, Blakenhurst prison and an Army base in Lichfield.

Walker pleaded guilty at Solihull Magistrates Court to assaulting his wife at their home during an argument over their dog in June 2008.

At the time he was sentenced to a community order. The couple have now separated.