I don't know if these companies ship to the UK, but try:
University Products of Canada
e-Mail [log in to unmask]
FAX 905-858-8586
Carr McLean Quality Supples
FAX (416) 252-9203
Tel. (416) 252-3371
Both these companies have acid free tags, but I'm not sure about the
bags.
Good luck
Rosemary Holmes
Art Storage Officer
National Gallery of Canada
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