From a UK perspective, your ILR becomes invalid on acquisition of Citizenship, so strictly, an Border Agency Officer at your port of entry maynot be satisfied that you have a right to be here. Practically, it is unlikely you would be turned away if it is a one-off. It's therefore advisabel to have a ...

Kiamsiapl, I was in the same position, having been on a student visa for a number of years before I got my first WP. Date of entry should be the date you first entered the UK and your port of entry should also be stated.

Here's my updated timeline: NCS or Postal: NCS London Date of submission or posting: 3 Nov 2009 CRITERIA - 5yrs WP / HSMP + 1 yr ILR Date of debit of debit/credit card: 09 Nov 2009 Date of receipt of acknowledgement: 11 Nov 2009 (dated 9 Nov) Date of receipt of approval: 5 Dec 2009 (Dated 25 Nov ...