If the deposit has since been protected you can't claim x3, but if it still continues to be unprotected then yes you can claim x3.
The fact the Landlord has never approached the guarantor is a non issue
Is there anything else you want to know?
Are you there?
Yes. You just want to issue proceedings for your deposit?
What is it you want to know about this now?
Yes, I understand that part
Yes you are right.
If he hasnt protected the deposit you can claim x3 against that
In any event it will be a small claim
Either party needs to file and serve documents 14 days before any small claims trial
So you need to gather all the evidence and prepare for any trial which will probably be months away
Does this help you?
The Landlord will need to show on balance that the sum is due from you
He brings that part of the claim so has to prove it
Does this help?