From a report today into Border Agency performance at Heathrow.
"..... targets for waiting times at Heathrow and other airports were being met more regularly: 99% of sampled passengers from outside Europe cleared passport control within 45 minutes between May 2012 and April 2013 compared with 81% in April 2012."
BBC News - Border staff 'taken off' immigration searches to process queues
45 minutes ? What an absolutely pathetic TARGET, to try and claim credit for meeting - except they didn't even achieve that completely. 45 minutes just to clear passport control for transfer pax will mean a significant proportion will miss their connecting flight.