FLR M visa postal or appointment application

[Rawat1011]

My Visa entry clearance visa is about to expire on 6/05/2016. The Gov website just says apply before your visa expires.

I am thinking which is best option for me to apply for the FLR M visa. I am no rush and don't really need my passport for next few months, but want to know if I have submitted my application via post this month and I do not get my passport with the FLR M visa stamped until 06/05/2016. What are the implication, wiil I be breaching any laws?

Do you recommend I go for the same day appointment application? I know it costs £500 extra.

[CR001]

If you apply before you visa expires, your existing visa conditions continue while HO is processing your application, so no, you will not be an overstayer or breaching any laws/rules.

[Rawat1011]

Thanks for replying so quickly and clarifying this for me.