New data has found that London residents may be paying £9k more in rent each year than if they’d used another property comparison site.

The findings, from technology expert Andersen, analysed over 8,541 rental listings across major UK cities on three major property portals – Zoopla, Rightmove, and OnTheMarket – to identify differences in the number of properties available and the average monthly price.

The analysis found that the typical renter in London can pay up to £755 more for a similar property in the same parts of the city by using one site over another – which is equivalent to an extra £9,062 a year; and ranks second as the city with the biggest discrepancy.

The average price that renters in London will pay for a rental property right now is £4,582 – but some residents may find they’re paying more for a very similar property if they went through the priciest provider.

London residents who are spending considerably more on their rent may be disheartened to hear that the city boasts much higher rates than the national average rent across major cities – with the average currently £1,682 (172% lower than London).

However, those planning to move to a new property before Christmas or in the New Year should ensure they shop around, especially given rising concerns around rental costs.

Shopping around is also key to ensuring all of your needs are met, as renters may also end up with a reduced selection if they use one provider over another. In fact, the data shows the average difference in the number of London listings between sites is 4.5%.

While fluctuations in the number of available properties are expected on property portals, it may see some renters opt for a pricier home than intended as they feel there’s a limited number to choose from – when switching to another site might have rectified the issue.

Coming ahead of London as the city that sees some renters overpaying due to using the ‘wrong’ provider is Leeds , with some residents paying up to £10k more a year.

The third city that would benefit the most from shopping around is Plymouth, as some residents may end up paying £6.5k more a year for a similar property – or £543 each month.