Heathrow's fire service tends to a plane in trouble; immigration officers Eric and Caroline find some Colombian asylum seekers during a surveillance sweep; animal health officer Stuart intercepts a pungent reptile shipment; and El Al's Peter and Sara come to the aid of some pensioners stranded without their wheelchairs.

Pop band Suede make an impression on El Al check-in supervisor Sara Collins , and fire officer Kevin Tuffley orders an evacuation when a firefighting exercise goes wrong.

In the last of the current series, immigration officer Eric Day notes a passenger's resemblance to a woman previously refused entry to Britain.