Thyroid UK kindly advised me to request a fasting,early morning TFT.
The original TFT on 25.10.18 was 4.73 Range 0.34-5.60.
On 14.12.18 it was 7.73 and Se thyroid peroxidase and transglutaminase were negative.
The GP started me on Levthyroxine 50mcg Teva oral solution, as I had headaches previously with the tablets containing Mag Stearate.
I do feel much better and look forward to my next blood test, when I hope to also see an improvement in my cholesterol of 8.5.
I am extremely grateful for all your advice.