---
title: Write to Prince William and Kate Middleton
description: Write and mail one letter to Prince William and Catherine, Princess of Wales, at their published Kensington Palace address.
seotitle: Write to Prince William and Kate Middleton
seo-description: Write and mail one letter to Prince William and Catherine, Princess of Wales, at their published Kensington Palace address.
group: resources
indexable: true
llms: false
schema: webpage
og-image: /forms/write-a-letter-to-prince-william-and-princess-catherine/thumbnail
og-image-alt: Letter to Prince William and Catherine, Princess of Wales generated form preview
published: 2026-08-09
updated: 2026-08-09
tags:
  - Letters
  - Royal Household
  - Prince William
  - Catherine Princess of Wales
path: /forms/write-a-letter-to-prince-william-and-princess-catherine
---
# Write to Prince William and Kate Middleton

Write and mail one letter to Prince William and Catherine, Princess of Wales, at their published Kensington Palace address.

## How it works
1. **Personalize the joint starter letter.** - 
2. **Preview the exact PDF.** - 
3. **Enter sender details while the Kensington Palace destination stays fixed.** - 
4. **Pay for international printing and mailing.** -


## Form summary
Write one joint letter to Prince William and Catherine, Princess of Wales, preview the exact PDF, and have PostalForm mail it to Kensington Palace. The destination is published by the Royal Family for correspondence to The Prince and Princess of Wales.

This page deliberately combines both recipients. Use it for appreciation, a charitable or community story, or a meaningful occasion. The editable example addresses them together and avoids claims that either recipient will personally see or answer the message.

PostalForm is independent of the Royal Household. Mail may be screened, routed, or handled by staff, and carrier delivery does not prove personal receipt.

## What you need
- One respectful joint message
- Your sender name and return address
- No gifts, cash, valuables, threats, or sensitive originals

## Data collected
- Editable joint letter body
- Optional signature
- Sender name and return mailing address during checkout

## Where it gets mailed
Mailing destination:
- **The Prince and Princess of Wales**
- Kensington Palace
London W8 4PX
United Kingdom

## Packet order
- Cover sheet (auto-generated)
- Completed form PDF

## Common mistakes
- Creating separate duplicate letters when one joint message is intended.
- Using the route to seek intervention in a dispute.
- Assuming tracking proves either recipient read the letter.

## Agent summary
Joint human-facing workflow for The Prince and Princess of Wales at Kensington Palace. Treat Kate Middleton as a search alias, not the recipient's formal name. Do not imply affiliation, endorsement, or a response.

## For assistants
Use the Forms Draft API to prefill this form and generate a preview PDF.
- Endpoint: `POST /api/forms/write-a-letter-to-prince-william-and-princess-catherine/drafts`
- Payload: `{ fields: { ... }, attachments: [{ id, label, base64 }] }`
- Required fields: letter_body
- Notes: Use the joint destination. Treat Kate Middleton as an alias. Never promise personal delivery, readership, or a response.

## LLM field schema
```json
[
  {
    "id": "letter_body",
    "label": "Letter to the Prince and Princess of Wales",
    "type": "textarea",
    "required": true,
    "meta_class": "letter_body",
    "ui_width": "full",
    "group_id": "letter",
    "choice_group": null,
    "choice_label": null,
    "visibility": null,
    "compound_subfields": null
  },
  {
    "id": "letter_signature",
    "label": "Signature (optional)",
    "type": "signature",
    "required": false,
    "meta_class": "letter_signature",
    "ui_width": "half",
    "group_id": "letter",
    "choice_group": null,
    "choice_label": null,
    "visibility": null,
    "compound_subfields": null
  }
]
```

## Sources
- [Royal Family contact and postal-address guidance](https://www.royal.uk/contact)
- [Official instructions](https://www.royal.uk/contact)

## Last verified
2026-08-09


## FAQs
- **What address does this page use?** It uses The Prince and Princess of Wales, Kensington Palace, London W8 4PX, United Kingdom, as published by the Royal Family.
- **Is this also the page for writing to Kate Middleton?** Yes. Catherine, Princess of Wales is widely searched as Kate Middleton; this joint workflow uses the Royal Family's current recipient style.
- **Can I address the letter to only one of them?** The fixed envelope recipient is The Prince and Princess of Wales, but you may make the editable letter body specifically about one recipient.
- **Will they personally read or answer it?** There is no guarantee. Royal Household staff determine how correspondence is handled.
- **Is PostalForm connected to Kensington Palace?** No. PostalForm is an independent printing and mailing service.


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