Any with Normal Stamps can use them for the next year.
If you have any over
you can fill in a Form to get them changed
to the New style stamp.
Where can I get a Swap Out form from?
[Our 'Swap Out' scheme will open on
31 March 2022 and from that date
you'll be able to get a 'Swap Out' form
from the following places: print one off our website;
contact Customer Experience and
we'll post one out to you;
pick one up from your
local Delivery Offices' Customer Service Point.
Please note swap out forms are not
available at Post Offices.]
https://www.royalmail.com/sending/barcoded-stamps