I thought I would provide an update for anybody that is interested.
Total T4 range is 4.5-12.5
Free T4 (Not bound to protein) is 0.7-2.0
So its clear the range that I was tested for is total T4, but that is still way above 12.5.... and my GP is suggesting INCREASING thyroxine from 100 mcg to 125 mcg !
Its a total contradiction that Total T4 is above the reference range and also TSH is above reference range.
Anyway, after my heart palps I decided to stop taking synthetic thyroxine for two days until my result came though. The heart palps disapeered, today I took 100 mcg again after my doc called with the results and straight away the palps were back and slight pain in my chest also...