Money expert Martin Lewis is urging people to get as much as £1,128 from their water supplier by making one simple change.

Martin has this week turned his attention to water bills, hot on the news that some water companies are looking to increase household water bills by as much as £94.

Water ombudsman Ofwat has announced it wants to increase prices by an average of £19 a year, but water firms are saying it’s not enough and want to push bills even higher.

The bill hike varies depending on…