Khaled Mustafa Yasin, 64, of Ealing, was sentenced to two years imprisonment, suspended for two years, and ordered to complete a 200-hour community punishment order.

Yasin was paid £1.3m for his work as a forensic medical examiner for the Metropolitan Police Service over an 11-year period. However, he only paid tax on £655,955 of that money, which meant he avoided a £300,000 tax bill. He also owes £50,000 in interest.

The evasion was discovered as part of the HMRC tax health plan campaign, which was launched in 2010 to tackle undeclared tax and income from doctors and dentists and has so far recovered £64m in unpaid tax.

David Margree, assistant director, criminal investigation, HMRC, said: ‘Yasin thought he could get away with the fraud because he had declared some of his earnings – he was wrong.

‘This was a serious breach of Yasin’s professional standards.

‘Had he come forward in 2010, and used the voluntary disclosure campaign to put his financial affairs in order, he could have avoided a criminal record and serious damage to his reputation.’

The fraud took place between April 2002 and April 2011. During this time Yasin also worked as a GP for a health centre in Brentford, Hounslow.

He was sentenced on 14 November at Isleworth Crown Court for eight charges of cheating the public revenue contrary to common law.

This is just one of a number of cases going through the courts as part of the medics campaign.

On 13 November, a Leicestershire doctor was jailed for 18 months for evading almost £186,000 in tax after an HMRC team targeting undeclared income in the health sector discovered he was declaring only half of his total earnings.

Dr Michael Summer worked in the private sector, preparing medical examination reports for insurance companies and the armed forces. He did so on a self-employed basis, and submitted a self assessment tax return through his accountant each year.