I missed the comment about salaries but what did catch my ear was the one about the engines at £14-15K each and they had 8 IIRC. Back in 77-78 I had just joined ICI as a metallurgist in their Research crowd and considered myself incredibly lucky to be commanding a salary of £4,600* which was an increase of almost 50% over my previous employer.
So they were spending 3 years of my salary on one engine, then had another 7 as spares !
Brian
* of course as a single guy instead of dutifully saving that extra £1500 a year, I just went and blew it on an Elan. Actually, come to think about it, I blew it before I had it.....