At my wit's end with this one...
I cannot understand why families visiting London love to walk in a line the full width of the pavement.... slowly... Oh so slow!. If I'm walking towards them they don't appear to notice me until I'm right in front of them and then seem confused/annoyed that they need to move to let me through. If I'm behind them they don't seem able to hear my "Scuse!".
Whilst it might work for them, there's a whole city of other people to consider. So it doesn't work.
Why are they like this and what do to?