As part of the survey, an office supply firm tested desks around the country and found germs in almost two-thirds of computer keyboards, while some even had mould growing underneath. 

Lawyers, accountants and computer workers were said to be the most unhygienic office workers, while social workers were the most likely to have mouldy food on their desks. 

Surprisingly, the report found that over half of office workers in the survey were not aware that bacteria could be lurking on their keyboards, phones and screens.