Mrs Mabel Canary
24 The Street
Some Village
Some Town
Noshire
AB1 2YZ

Our ref. Customer no. Invoice no. Date
ABC/123 2 123456 14th February 2014

Dear Mrs Canary

Subject: A sample letter

This is an imaginary letter.

This is the second paragraph of the letter.

Yours sincerely

PS: this is a postscript.

encl: Photocopy of something interesting
  Photocopy of something rather dull

cc: Prof Important Person
  Dr Bor Ing
There are two fold marks along the left hand side.