Renter to uk before exp date

[EllyNadi]

Hi there

I’m in UK with the TIER 1 dependent visa and my visa will expire on 20-05-2018
I want to travel and come back before expiration. My question is how many days before expiration I should come back to renew my visa. Just worry that I come back late and not enough days before expiration and they don’t let me to enter to UK.
Would be great if you can help me. Thanks

Best,

[CR001]

You can re-enter the UK at any point before visa expires.

Try not to leave too little time in case their are aircraft delays if you still need to complete an extension application form.