There isnt any difference besides the S version having a lot more fillers. It seems that anyone who does well on thiroyd does not do well on thiroid s and vice versa. Just try one and if it works for you, fab. If not, try the other. I just started Thiroyd (thought id try this version first due to less fillers) 6 days ago and have had no side effects this far.
Will I still be liable for import tax and the Royal Mail fee...
Yes - the liability is identical.
Thing is, if the sender declares an amount less than £15, it won't get picked up unless the HMRC are actually looking beyond the label.
Also, it isn't an import tax as such - it is VAT which we would have to pay on things we buy within the UK. (There can be duty at higher values, but not below £135.) It acts to even the playing field otherwise UK suppliers would be at a disadvantage - as used to happen with so many Channel Island imports. (There is no allowance at all now for Channel Island imports,)
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