Used to work at an office 5 minutes taxi ride from MAN, so usual practice when flying was to park in the company car park and get a pre-arranged cab. To cut a long story short this process failed one morning, and so my ride finally departed from work at 0630 for an 0645 departure (this was before online/kiosk check in was invented - about 15 years ago IIRC. The flight departed on time with me on it - coincidentally it was BA.
I suspect that might not happen nowadays....