Letterhead Logo Update

I need existing letterhead/documents amended to update the logo, the Queen's warrant needs to be replaced with the King's Royal Warrant and the wording amended accordingly.

Requirements:
- Replace the current logo with a new one (file provided)
- Ensure the letterhead maintains a professional appearance

Ideal Skills:
- Graphic design expertise
- Experience with layout modification
- Proficiency in relevant design software (e.g., Adobe Illustrator, Photoshop)

Please provide samples of previous letterhead designs.