As my job is generally non static, i am working all over the place, if i use public transport i will sometimes start at the same time of day from Whitwell or Worksop, i have done the 0636 many times which allows a nice breakfast at Worksop in the tedious wait, so i see more regulars in the cafe / platform than on the train there i guess. However i do do some short term commuting from time to time. A couple of years back i was doing a regular trip in from near Waterloo to Abbey Road Studios, by fairly regularly i mean 3 or 4 days per week, 3 weeks in 4 for a few months, i had found a regular place to stay near there, id be on a fairly early Jubilee Line train up to St John's Wood. I would see the same elderly couple almost every morning, they would get on at Waterloo, and get off at St John's Wood the same as me, i wouldn't be exactly the same time either, some days i would be a couple of trains later, but i seemed to magically bump into them almost every day. A few weeks in i decided to go up the Bakerloo Line to Maida Vale instead, i liked that journey, it took a bit longer and the walk to the studio is longer but i like the 1972 stock and it seemed les busy, a few days afterwards i saw the same couple on the Bakerloo line, it turns out they were both quite poorly and had regular visits to the Hospital near by for treatment and that morning the Jubilee Line had severe delays so they had gone the other way. I went back to using the Jubilee Line after that and saw them quite regularly at that time of morning. I used the line a few months back at that time of morning, although not from Waterloo and saw the gentleman sat on there on his own, he got off at St John's Wood, it was quite upsetting, the things that go through your head at that point. I said hello, it turns out his wife was staying in hospital after having surgery and was doing well, much to my relief.