Nearly 75 per cent of working plumbers experience problems with their knees, yet only 41 per cent have discussed the issue with their GP.

Research by The IPG, a leading group for independent plumbing, heating and bathroom specialists, which surveyed 184 plumbers, also discovered that 57 per cent of them felt that they would need to knee replacement surgery in the future, due to the hardships of the profession. Fifty-nine per cent felt they would be forced to retire early because of the injuries they pick up in their work.

On average, a UK plumber works 47 hours a week, with around half of that time spent on their knees. This can have a detrimental effect, especially if no protective workwear is worn. However, even with kneepads 77 per cent said that they still experience issues.

Those who have been working for over 30 years were the ones who had the worst knee issues, with 68 per cent saying they have had physio, keyhole surgery or other operations on their knees. However, it's not just plumbing veterans who are experiencing problems. Younger plumbers too are finding they need to visit their GP or the hospital and take time off work, at great cost to their businesses. Even just a week off work unpaid can lead to a tight month for a self-employed plumber.

One condition affecting plumbers is bursitis, caused by bony joints having regular contact with hard surfaces. At its worst, it can become completely inflamed, meaning it is impossible to walk without severe pain. It can lead to fevers and even sepsis if left unchecked.

Tony Dark, director of trade at The IPG, said: "This is a serious issue that needs to be addressed. We would like to urge all plumbers and installers to ensure they are using specialist protection whilst on the job, from apprentice level all the way up to those who have been working in the trade for decades.

"It is also essential that if any plumber or installer starts to have any trouble with their knees that they consult a GP straightaway in order to discover any possible problems early on to avoid more serious issues."

Are you a plumber who suffers from knee problems? Are there any other trades which are affected by particular health problems? Email mark@moosemarketingandpr.co.uk