The Decca Navigation Company's hospitality was legendary. After a factory visit you would be bundled into a bus with all the windows papered over. At the front would be a large scale moving map display with the streets of London. You would follow your progress until it stopped by a black square labelled PH. Then you were let out and you found yourself in a pub car park just about to be herded in for a slap up lunch and loads of beer.
The pre-Xmas parties at Decca House were something else as well.