If you are happy to leave the rental income generated in the company then you might consider this. Otherwise, it doesn’t make sense because rental profits will first be subject to Corporation Tax at 19% then the income must be extracted via salary and/or dividends, which are subject to further tax.
Generally a specialist property investment company makes sense once the investor starts to accumulate more than 5 or 6 properties.
Note, if you want to transfer an existing property portfolio to a limited company, you are effectively selling the properties which may generate a Capital Gains Tax liability, and possibly Stamp Duty Land Tax.