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if your rental looses are from residential letting then they are only able to be set off against other letting profits of the tax year or carried forward against letting profits in future yearsprofits.
If your losses were created by capital allowances then these can be set off against the landlords other income of the tax year and the tax year next following on
Of course if your letting was Furnished Holiday lettings (and you would know if they were that ) the losses would automatically be able to be set off against the landlords other income of the tax year and any surplus to the previous year
If the business is your own then any agreement not to take rent is liable to be viewed as uncommercial and let at less than market value so that the looses would not even be set offable (if there is such a word) against other property profits for the year let alone your other income.
Putting property into a ltd company is not something I would recommend as to get it (or the subsequent gains) out requires Capital gains Tax within the company and then CGT on your individual basis