How to address an envelope correctly

Labelling an envelope properly helps your letter arrive on time and without delays. Once you know the layout, it only takes a minute to address an envelope, whether you're sending a holiday card, an invitation, or an important business letter.

Quick envelope checklist

Before you drop your letter into the postbox, make sure you've covered the basics.

□ Return address in the top left corner

□ Recipient's address centred on the envelope

□ Full street address, town or city, and postcode

□ Flat or apartment number included, if applicable

□ Correct postage attached

□ Address written clearly or printed

How to address an envelope

Most envelopes follow the same basic layout. Place the sender's address, also known as the return address, in the top left corner, the recipient's address in the centre, and the postage stamp in the top right corner. Before posting your letter, check that the address is complete, easy to read, and includes the correct postcode.

1. Write the return address

Include your full name, street address, town or city, and postcode in the top left corner of the envelope. Although a return address isn't required, including one makes it easier for your letter to be returned if it can't be delivered.

2. Add the recipient's address

Include the recipient's full name in the centre of the envelope, followed by the street address, flat or apartment number (if applicable), and the town or city with the postcode on the last line.

3. Attach the postage stamp

Place the correct postage stamp in the top right corner of the envelope. Using the correct postage helps your letter move through the Royal Mail network without unnecessary delays.

Envelope address examples for common mailing situations

Most envelopes use the same format, but some address types include additional information. Use the examples below whenever you need to address an envelope for personal or business post.

Standard home address

Jane Smith

24 High Street

Bristol

BS1 4DJ

Use this format for most residential addresses.

Flat or apartment

Jane Smith

Flat 4B

123 High Street

Manchester

M1 2AB

Include the flat, apartment, or unit number whenever it's part of the address. Leaving it out may delay delivery.

Business address

Jane Smith

ABC Company

12 Market Street

Manchester

M1 2AB

Include the business name above the street address when sending a letter to a company or workplace.

PO Box

Jane Smith

PO Box 123

Leeds

LS1 4AB

If the recipient receives post through a PO Box, use the PO Box instead of a street address.

International mail

Jane Smith

15 Oxford Street

London

W1D 2HG

UNITED KINGDOM

International addresses don't always follow the same format as UK addresses. Write the destination country in capital letters on the last line and check the destination country's postal requirements before posting your letter.

Royal Mail addressing tips

Once you've placed everything in the right location, a few formatting details can help your letter move through the postal system more efficiently.

Write clearly

Use a black or blue pen, or print the address on an address label. Clear handwriting is easier to read and less likely to cause delivery problems.

Follow Royal Mail formatting

Keep each part of the address on its own line and align it parallel to the longest side of the envelope. Include the full postcode to help Royal Mail process your letter efficiently.

Use standard formatting

Write the town or city name in full and check that the postcode is accurate. Avoid unnecessary punctuation, and make sure every part of the address is easy to read. While capital letters can improve machine readability, neatly printed mixed-case addresses are also widely accepted.

Check your postage

The amount of postage you need depends on the size, weight, and destination of your letter. Larger or heavier envelopes require additional postage, so check the latest Royal Mail prices or ask your local Post Office if you're unsure.

Common mistakes when addressing an envelope

A few simple checks can help you avoid delays and returned post.

Missing or incorrect postcode

An incorrect postcode can delay delivery or send your letter to the wrong destination. Double-check the town or city and postcode before posting.

Leaving out a flat or apartment number

If the recipient's address includes a flat, apartment, or unit number, make sure it's included. Missing this information can make the address incomplete.

Poor handwriting

Smudged ink, cursive writing, or decorative fonts can make an address difficult to read. If possible, use clear block letters or a printed address label.

Incorrect or missing postage

Large or unusually shaped envelopes, as well as heavier letters, may require additional postage. If you're unsure, your local Post Office can help you choose the correct amount before posting.

Final thoughts

Addressing an envelope only takes a minute, but getting the details right can help prevent delays and returned post. If you send letters regularly, Sticker It's labels make it quicker to prepare your envelopes while keeping every address neat, clear, and consistent.

FAQs

Do I need to include a return address?

No. A return address isn't required, but including the sender's address makes it easier for your letter to be returned if it can't be delivered.

Can I handwrite an envelope?

Yes. Handwritten addresses are perfectly acceptable as long as they're neat and easy to read. Use a black or blue pen rather than a pencil.

How many stamps do I need?

The amount of postage depends on the size, weight, and destination of your letter. Check the latest Royal Mail postage prices before posting.

Where does the flat or apartment number go?

Include the flat, apartment, or unit number as part of the street address. It can appear on the same line as the street address or on the line above it if needed.

How do I label an international envelope?

Use the destination country's preferred address format whenever possible. Include the destination country in capital letters on the last line and use the correct international postage.

Should I use capital letters?

They're not required, but clear, easy-to-read writing helps mail processing. Whether you use capital letters or mixed case, make sure the address is neat and legible.

Can I use address labels instead of handwriting?

Yes. Printed address labels are widely accepted and can improve readability, especially if you send letters regularly or prepare multiple envelopes at once.