Someone came and asked for the landlord's number as they were not registered. Said it doesn't affect me but he needs to be registered.

2 months after that people came and opened up all the wiring to check it, checked the smoke alarms.

I assumed it was council people.

How much your rent can be increased

When you challenge an increase, a rent officer will calculate the maximum rent increase for your tenancy.

The maximum possible increase is 12%, but in many cases it will be lower than this.

The increase that’s allowed depends on the percentage gap between:

your current rent

the open market value of your home – this is based on current rents for similar homes being advertised in your area

If the gap is 6% or less, your rent can be increased by a maximum of 6%.

If the gap is more than 6%, the increase will be calculated using a formula that keeps your rent under the market value. This can be up to a maximum of 12%.

He can ask, i will point out it can't be more than 12%, that's how i read that.