Or put the lowest denomination stamp you can buy on the envelopethen they have to pay the shortfall and £1.00 administration fee to receive the 'correspondence'.
(
Muns,
Fri 2 May 2014, 8:56,
archived)
But the thing is, they almost certainly won't go to collect it.
Enzyme is powered by sunlight,
Fri 2 May 2014, 9:10,
archived)