ITT Improve Thyroid Treatment is an online patient-led group on Facebook. We work on certain projects with other thyroid charities and groups including Thyroid UK, The Thyroid Trust, British Thyroid Foundation, and Thyroid Support Group Norfolk.
ITT has updated their template letter for those who've had T3 refused or removed. It includes all national guidance and parliamentary statements on T3. It's in Word, with all instructions on what else to add, and info to help you find your MP, Healthwatch, ICB, Chief Pharmacist, Patients Association, Consultant etc.
I can't attach it here unfortunately. So I think the only way is for you to join ITT (it's simple!) and get it there.