A minor nit, but it's not a permanent body modification. The marking is supposed to heal. He was caught because he marked a liver and it didn't heal because that patient was ill and another surgeon found the mark.
He was prosecuted and convicted for a minor offence ("assault by battery" is almost the lowest level of this offence) and because he pled guilty the more serious charge ("assault causing actual bodily harm" (ABH)) was dropped.
Some doctors in UK have been convicted of manslaughter by gross negligence (a far more serious criminal charge) and were able to return to practice after a time of suspension, so he might be able to return to work.
He's been through a hearing at MPTS (the independent medical tribunal service) after a complaint to the GMC (the regulatory body for doctors in UK). I think it was an interim hearing, and they're waiting for the criminal trial to finish.
But here's the warning he got:
> In August 2013 and on more than one other occasion Mr Bramhall initialled patients’ livers using an argon beam coagulator. This conduct does not meet with the standards required of a doctor. It risks bringing the profession into disrepute and it must not be repeated. The required standards are set out in Good Medical Practice and associated guidance. In this case, paragraph 47 and 65 of Good Medical Practice are particularly relevant. 47. You must treat patients as individuals and respect their dignity and privacy. 65. You must make sure that your conduct justifies your patients’ trust in you and the public’s trust in the profession. Whilst this failing in itself is not so serious as to require any restriction on Mr Bramhall's registration, it is necessary in response to issue this formal warning.
They had several options: they could have prevented him from working; they could have required him to take action to prevent re-occurance.