The Blame Game. When two airliners collided 35,000ft above Switzerland last summer, shock waves were felt throughout the industry. The 71 dead included a party of Russian schoolchildren making their first trip abroad. The final part of the series investigating air crashes forensically examines what happened that night. Mid-air collisions are rare, but near misses are not uncommon over British skies. Could the same thing happen here? Directors Julia Harrington and Ricardo Pollack
Producers Helen Britton and Sarah Waldron Revolution in the Skies follows on BBC4 at 10pm