Learn how to write a formal letter and understand how to format it correctly with this BBC Bitesize English writing guide. Here's how to format a letter , including spacing, font, salutation, closing, and what to include in each paragraph, as well as sample letters . Learn how to write a formal letter in English with the correct format, structure and tone. See examples of different types of formal letters for various purposes and situations. What is a formal letter , and how do you write one? Learn to write a polite formal letter with templates and tips to express yourself effectively.