I am on HSMP in UK, got the approval on 30th June 2006, expiring in 30th June 2008. Now HSMP is not available so i need to apply for extension under Tier1 which will be for 3 years. 1. How much time before my visa expiry i can apply for tier1. Is it 1 month definite or i can apply now also i.e 2 mon...