“UFO had near miss with Boeing 737”,
18 February 2010 (The Daily Telegraph, London, UK)
Two British Airways Boeing 737 pilots (flight 5061) reported a near miss with a UFO over the Pennines, UK on 6 January 1995, according to the article:
http://www.telegraph.co.uk/news/newstopics/howaboutthat/ufo/7254652/UFO-had-near-miss-with-Boeing-737.html
The incident was investigated by the Civil Aviation Authority (CAA).
The release of the fifth batch of UK MoD UFO files (18 February 2010) by the National Archives also revealed two other airliner-UFO incidents over the UK.
An airliner had an encounter with a UFO near Glasgow Airport in December 1996 and in April 1997, the crew of an Aer Lingus airliner spotted a UFO during a flight from Dublin to Amsterdam.
British Airways Boeing 737-400 (wikimedia.org photo)