At the beginning of each year, I put down a Question asking how many items of correspondence were received in the Palace of Westminster in the previous year. I have received the answer for 2012. A total of 2,544,019 items were received. Approximately 25 per cent (635,005) of these were destined for the House of Lords.
Though the volume of correspondence is substantial, it represents a decline over previous years. I have done a post on Lords of the Blog giving the figures from 2005 onwards. The number of letters coming in is declining as the volume of e-mails increases. Given the ease with which people can send e-mails, relative to the time and expense needed to generate and mail letters, my impression is that the increase in the number of e-mails is greater than the decrease in the number of letters flowing in to the Palace. I do not yet have hard data to substantiate that impression.
I can see a good subject for a research project….