I had to explain to the uni that they had some responsibility to British industry when they suggested I call back after the summer holidays. Running my own company, I got good at making my point. Twas on the doorstep in 36 hours.
I remember thousand quid telephone bills, much of it breathing fire at suppliers, just trying to maintain standards. But it was about a thousand times more stressful than airline flying.
Mind you, it was rather a cheek asking for (today's equivalent) of about ten grand to do the work, considering I'd sold them the new system. Still, that was the heyday of computing. Nice while it lasted.