Hello my name is ***** ***** I will help you with this.
How much was the damage and what is the cost of the damages?
Ok - then yes you can keep it.
At worse the 'friend' can try and sue you for the £450 back.
However in terms of damage, then you should get evidence. photos. video, keep receipts etc before you get it all done.
Then if it goes to Court you have the evidence to show what state it was in.
But make sure you have it all documented.
Can I clarify anything for you about this today please?
I think you would be successful if you have damage evidence.
Does that clarify?
Well its breach of contract but unlikely you would ever be prosecuted.
If this answers your question could I invite you to rate my answer before you go today, otherwise the site doesn’t pay me for the time spent with you. Thanks in advance and good luck.