My pharmacist (England) just said today that they can't get all my prescribed Evorel patches, again.
They managed to order one 4-week pack, with an expiry date of October 2020, which is the same expiry date as the packs I was being dispensed last spring, and which then as a batch supposedly ran out in the early summer but was available privately for about a month.
So this pack has obviously been released from some stockpile somewhere.