In message 01c77f80$17483ca0$LocalHost@default, Michael R N Dolbear
writes
If so it's because they too have no means of getting them into
circulation since they don't want to reload the ATMs aka hole in the
wall machines two or four times more often.
When our local wailing wall had £5s and £10s it would always run out on
a Saturday lunch time. Now it has £10s and £20s it seems to be good
for the whole of the weekend.
--
Clive.