Tax return when leave UK

Hi, i'm planning to leave UK in a few months and i want to ask if i can start apply for tax refunds (p85) while i'm still here. Thank you !

Hi 

You can send your P85 claim whenever you like, though to complete the P85, you will need the ‘details of employee leaving work’ from your final P45.
Also, if you have not left the UK yet, you must print and post your claim. You can find more advice on making your P85 claim here - Get your Income Tax right if you're leaving the UK (P85)

Thank you