Do you know this book...

[gabennett]

It must have come out about 20 years ago. It is a factual comedy about a man who declares his house and garden (in Canterbury, Kent, I think) to be separate from the UK and sets up his own country. He then writes to various government bodies and government, and printed the replies. It ends with him writing to the Ministry of Defence asking to buy a Harrier jump jet, but them replying that since his garden is so small to park or take off would scorch his rhodendendrons. What is it called and who is its author!

[xyzzyplugh]

Don't know but the british film 'Passport to Pimlico' may yield an answer; good luck.

[Pinotage]

I'm fairly certain the book is
The Defence Diaries of W. Morgan Petty by Brian Bethell, published by Penguin in 1984.
Now out of print but available on the second hand market

[Merthyr Imp]

There was a also sequel to this book with the title ''European Entries - The Common Market Papers of W. Morgan Petty' in which the hero applies for his new sovereign state to join the EEC. The books also seem to have been inspired by 'The Henry Root Letters' by William Donaldson.