I don’t know who gave you that advice but I wouldn’t be taking any more advice from than in the future because they could not be more wrong. They may think they’re being clever but if you followed the advice, you would end up with a huge claim against you for unlawful eviction.
You have to give them formal notice in writing.
You would normally be getting rid of them under section 8 but also section 21 as the tenancy has expired.
Depending on what you get rid of them, the notice can be up to 4 months as you will read here.
Any notice must be in the statutory format in writing.
The notice period originally was 2 months under section 21 and it could be as low as 2 weeks under section 8 but it changed to 3 months on 25 March last year and to 6 months on the 31st of June last year.
From , 1 June 2021, those notice periods are now generally 4 months.
However certain notice periods are shorter such as rent arrears but there have to be far more rent arrears now than there were before. It used to be 2 months, no wit is 6 months. So it appears to be more favourable to the landlord but in actual fact it isn’t.
The government have produced this webpage on exactly this subject:
The notice periods may be coming back to normal, maximum of 2 months, at the end of September but that has yet to be confirmed.
Once the relevant notice has expired, you can then make an application to court to take possession and he still doesn’t move out a further application for a warrant of possession for bailiffs to physically evict him.
Thank you for letting me assist you with your legal question. I am glad that I was able to help.
I am not certain whether that answers the question for you or not, but I am happy to answer any specific points arising from this.
It will be my pleasure to help you again either further with this or any future questions you have