Increasing numbers of renters are having difficulty meeting their monthly payments, with 55 per cent of those who sought help from debt charity Consumer Credit Counselling Service living in such accommodation last year.

Among the service's clients, the average person living in the private rented sector was found to owe £924 in unpaid rent, indicating that tenants are facing growing problems when it comes to paying existing prices.

With this in mind, the inability of certain sections of the population to meet the conditions of their tenancy agreements could see landlords having to restrict any rises planned for the near future.

Rent levels in London hit their highest ever level in October last year, according to research from Knight Frank, and have since experienced a drop of 0.4 per cent in the capital over the past three months.

As the buy-to-let sector has grown in popularity, rent prices have also risen, and landlords have been advised to be more selective when assessing potential tenants as a means to ensure that they are going to be able to meet their payments throughout their tenancy.

David Lawrenson, private rented expert at LettingFocus.com, said that landlords may have to "be even more picky about the tenants that they have, to try to avoid those that are likely to go into arrears".

In this respect, the income levels and long term employment prospects of potential tenants may come under increasing scrutiny as investors who let their properties look to maintain profits.

Delayed, late or missing payments are catered for by some landlord insurance policies such as rent guarantee cover that can protect an owner's finances in the case of any unexpected financial stumbling blocks.

And taking this into account, investors can be expected to take the appropriate steps to maintain the profitability of their properties if rent prices becoming an increasing problem.