Landlord has said he might put the rent up now I’ve got a roommate. Is he being unreasonable?

[Tenantlandlord]

I’ve rented a two bedroom flat for the last 6 years. I get on well with my landlord and like to think (hope) I’m a decent tenant. I’ve worked full time since living here but recently suffered a breakdown over the last few months and as a result I decided to leave my (very stressful) job. I thought I would have to give up the flat as I could only find part time work, which unfortunately meant I wasn’t able to cover all the rent and bills on my own. I went back and fourth on the idea of renting my spare bedroom out and asked my landlord a couple of months ago if I could do it. He had no issues with it and said that was fine, especially if it meant I could stay. I’ve now found someone who moved in a couple of weeks ago, so far so good. I’m still working part time but even if I find full time work I might just see how it goes with the roommate and if it works out he can stay long term if he chooses to.

My landlord has recently made a couple of comments in reference to putting the rent up. Can he do that? If so is he being unreasonable? Am I?

*The Op isn’t sub letting as she still lives there. And the other person isn’t a tenant.

They’re a lodger.*

The OP is subletting. It's irrelevant whether op lives there or not. The lodger does not have a tenancy agreement directly with the landlord, hence it is sub letting

I don't think it is legal to put the rent up for that reason. What happens if someone has a child? You don't get charged extra. The sharing of the property impacts you and not him. You don't pay rent per person unless it is a house of multiple occupancy. 2 people sharing a property doesn't fall into that category.I would get some housing law advice

Yearly rents are increased by most owners. In England iirc there is a cap on how much the increase can be.

I am lucky. My rent hasn’t increased in 13 years!