Thank you for the question. You do perhaps have some legal protection here. Firstly, you will want to review the lease and see what is under the clauses which cover any rental increase and their right to do this. Furthermore, a landlord can only realistically increase your rent if the figure they are asking for moving forward reflects the fair market value. So for example, if similar properties to yours are going for around £1000 per month and you have been paying 600. per month then the landlord could legally and reasonably increase your rent by around £400 per month. However, if properties were going for around £700 and you were paying £400 it is not likely they would be permitted to increase your rent by this amount. You can stay in the property and dispute the rent, what I would advise doing, as soon as possible, is raising this matter with the housing ombudsman, they will be able to advise on your situation and potentially provide a remedy. Remember you and the landlord can change the lease at any point so long as you are both in agreement.
I hope this information proved helpful. You will find a local solicitor who deals with these matters on the law society webpage which is as follows;
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