I know I read this in another thread, but this is from the gb fine print at the bottom of the page:
Free selected promotional products cannot be sold/transferred. They reside in your account separate from the original purchase and would not be transferred if the original qualifying item is sold.
Note that qualifying products must remain registered in your IK account to retain eligibility.
It would be good for Peter to clarify this. It is not totally clear what was meant by "retain eligibility"