Changing locks on house

hi all, im looking for some advice please...
my wife moved out of our home, 3 months ago that is only owned by myself and the mortgage paid for solely by myself. she has since moved into another property with her new fella.

she has refused to give me back the door keys, I have agreed a time/date that she can collect all her belongings but she refuses to hand over the keys... I do not feel comfortable knowing she could snoop around and take things when im out.

can I change locks legally?

thank you

From what I have read change the locks.
She has moved in with another bloke...another home so no longer requires yours.
You have offered mutual collection time of stuff.
I would..whats the worst that can happen?

Don't mention it to her just do it then if it comes to light that she can no longer get in you can just explain that the lock got broken so you had to change it.

As a money saving quick fix if your front and back doors have the same lock swap them over. Few people carry a back door key and usually there is a bolt or something you can use as well.

House may only be in your name but remember it is a marital assett. All contributions to a marriage are seen as equal.

that's guys for the two above replies, much appreciated.... I think I will just get them changed, not exactly crime of the century, even if its not legal...and im sure she wont want to go through a court process.
thanks again

Or you could say you had to change locks because you lost house keys and a prescription (prescription has your address on)

This has genuinely happened to me.

When my hubby was arrested, I was fearful he could come in and be waiting for me, the POLICE said a lock is broke....which it wasn't, but I changed one door lock, and leave the key turned in the other door. Or like someone above has said you lost your keys, and prescription.

I was in this position and was advised that I couldn't change the locks. I went ahead and changed the locks.

The way I looked at it was this ... she would never know unless she tried to obtain access without my knowledge.

If that happened and something was said, I would have claimed the lock jammed and was advised to change them both.