Originally Posted by ross2010
See below from Citizen Information
Notice of rent review
Once the required period (12 or 24 months) has elapsed, your landlord can issue a notice of rent review.
The landlord must give you proper notice of the amount of the proposed new rent and the date from which it is to take effect. The notice must be in writing and contain the information prescribed by the legislation – see ‘Notice of rent review’ below. Emails, text messages and spoken messages are not valid forms of notice.
You must get at least 90 days’ notice of a rent review. This means that the new rent cannot then apply until 90 days after the notice has been issued.
Nothing there to say that the notice period must be at the end of a lease.
OP has already got notification of the increase. I would guess its 3 months notice and take effect at the end of 12 months after the previous increase.
How you suggested it meant would mean an increase could only take place every 15 months.
If OP is to sign a new lease from 1st Jan and last increase was 1st Jan 2018 and LL sent notification of new rent before 1st Oct, then I can't see what is wrong with that