As you appreciate, ignorance of the law is no defence.
If they raise your non-compliance of your statutory obligations as a defence to your section 21 notice, it is highly likely that your notice will be defective unless all the statutory obligations have been complied with.
The way the court looks at this is that you cannot breach your own obligations and then selectively try to rely on the statute to enforce your rights.
Whether this becomes a problem for you or not really depends on whether the tenants play nicely when it comes to move out in September or whether they decide to be awkward.
I am assuming that you protected the deposit within the first 30 days of receiving it because although it may be protected now, if you didn’t do that, whilst you can still serve a section 21 notice, they still have a claim for compensation for failure to protect.
More section 21 notices are defective than are ever correct and the most common defect is that they don’t give enough notice because the landlord gives just two months. Two months is fine provided it covers two calendar months and includes two rental periods so it may need to be longer than two months.
You cannot serve a section 21 notice within the first 4 months of the tenancy and therefore I would suggest that you gave a section 21 notice at the end of the fourth month giving a notice period to expire in September. The notice cannot be defective then for not being long enough.
Can I clarify anything else for you?
I am happy to answer any specific points arising from this.
Please take a moment to look at the top right-hand corner of the page and rate my service by clicking one of the stars at the top of the screen.
It's important that you use the rating service because that gives me credit.
It doesn't just give me a pat on the head! It's what gets me paid!!
There is also an experts incentive scheme whereby the more 5 star ratings I get I do actually get a pat on the head!
All you need to do is press Submit.
If you still need any points clarifying, I will still reply because the thread does not close.