Complex sentence: The first passenger to enter Terminal 5 was a UK ex-pat from Kenya who passed through security at 04:30 on the day to be presented with a boarding pass by the British Airways CEO Willie Walsh for the first departing flight, BA302 to Paris.
Split into simpler sentences: The first passenger to enter Terminal 5 was a UK ex-pat from Kenya who passed through security at 04:30 on the day. He was presented with a boarding pass by the British Airways CEO Willie Walsh for the first departing flight, BA302 to Paris.