ruchamafreeman Hi there and thanks for your question. I’m sorry, nothing is transferable between giffgaff accounts, so that’s not possible.
Dropping your giffgaff account and not going to be using your credit? It is possible to donate your credit balance to any charity that accepts SMS text donations, rather than letting it go to waste (your SIM will be deactivated and number/credit lost if not used for 6 months).
Need some inspiration on which charity to donate your credit balance to? No problem… Please take a look at this giffgaff thread created by giffgaff member rhort. The thread contains a list of charities (and associated text numbers) that would be happy to receive your text donation.
Hope that you find the charity suggestions on the thread useful. Many thanks for your time with giffgaff, it really is much appreciated. Hope you come back to giffgaff when you return back to the UK at a later date.