July 31 is the final day when stamps without barcodes will be valid and any mail picked up after that could incur costs for the recipient
Royal Mail's final stamp warning before new fee enforced - how to exchange - Daily Record
Just recieved a letter with a 1p stamp that has fraudulently masqueraded as a 1st Class stamp. : r/CasualUK
Royal Mail
Royal Mail extends deadline to use up non-barcoded stamps to July 2023
Royal Mail stamp warning as customers could face extra fees when sending mail - Daily Record
Royal Mail moves to stamp out deadline confusion after misleading ads - Chronicle Live
A very tough decision : r/royalmail
Royal Mail brings forward last posting dates for Christmas, Royal Mail
Royal Mail launches scheme to swap old stamps for new ones