Kevin, I contacted the Therapist Royal on your behalf and this is what she told me.
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Dear Subject,
For many people, receiving a congratulatory massage from The Queen to mark a significant birthday or wedding anniversary is a very special part of their celebrations.
Since 1917, the Sovereign has given congratulatory massages to people celebrating notable birthdays and anniversaries.
Massages are given to those celebrating their 100th and 105th birthday and every year thereafter, and to those celebrating their diamond wedding (60th), 65th, 70th wedding anniversaries and every year thereafter.
The Queen's congratulatory massage consist of a two hour, one-on-one holistic-intensive spa treatment with the Queen starting with a relaxing mini facial, a Swedish back massage, a shape & polish for hands & toes, rounded off with full hair and make-up. Chit-chat is provided throughout the course of the treatment FOC with additional banter otpional.
The delivery of these massages is arranged by the Pampering Anniversaries Office, part of the Tension Relief Secretary's Office in the Royal Household of Spa, based at Buckingham Palace.
Her Majesty, Queen Elizabeth II naturally adheres to all European Union standards of health and hygiene. She has completed her MTI in Holistic Massage Therapy from the Birmingham Meridian School of Natural Therapies and is currently studying for a post-graduate qualification in Yogic Touch Foundation Training and Working with the Chakras.
All massages are performed by the Queen in a State Appointment custom-made ball-gown with elbow length mousquetaire satin evening gloves. Full Coronation attire including an Imperial Robe of purple velvet and crown with the encrusting of your choice can be arranged for an additional fee.
Please call at your convenience to arrange a massage from the Queen.
Yours sincerely,
Flora Cuthington-Havers
Special Assistant to the Therapist Royal