Can anyone point me in the direction of any caselaw dealing with a claimants eligible rent where the landlord collects less than the contractual liability becuase the tenant does improvement works for the property? For example, where the contractual rent is £100 but the landlord only collects £80 a week becuase the tenant has made improvements to the property.

I'm certain that this has been looked at in the courts or by commissioners, but I haven't been able to locate anything.

Thanks,

Tony