My trip home yesterday was relatively uneventful. The tube ran on time, but the train was four minutes late arriving at Hersham, all within the TfL network.
This morning, I left the car at Hampton Court station after dropping my daughter off at daycare. The train from there to Waterloo was two minutes late. The connecting tube was on time, but it was a later tube than the one I should have been able to get, so I arrived two minutes late overall.
No reason was given for any of these delays.
Since yesterday morning, that's a total of six minutes and £15.