[KLF] [OT] Shrink-wrapping for UK mags ?

UK and US mags tend to be slightly larger than DIN A4 (paper standard size) so I can't use our own shrink foil for storing single pages of KLF articles properly. Is there any kind of foil in the UK I can use for this ? Preferably one I can still put in a normal A4 folder. ..::// Thomas