To ask the Secretary of State for the Home Department how many immigration officers were in post at (a) Heathrow and (b) Gatwick airport on 31 December (i) 2007, (ii) 2006, (iii) 2005, (iv) 2004, (v) 2003, (vi) 2002 and (vii) 2001; and if she will make a statement. (180677)