This is a set I had not come across before but given the date of issue I ought to be able to find the original New Issues Report(s) for the newsletter.
Anyway, right now, this set appears in our original British Trade Index part II (RB.27), though the description is a bit sparse, at only "HEAD-DRESSES OF THE WORLD. Sm. Nd. (25)".
There is a bit more information in the updated volume though, and a surprise, but more about that later. The description here is "HEAD-DRESSES OF THE WORLD. 1962. 65 x 35. Nd. (25). See HX-197".
Now that HX Handbook reference forms the surprise, because it turns out that this set was also issued by Ringtons Tea of Newcastle-On-Tyne, but not until 1973, eleven years after the Barratt version. And it only appears in part four of the original British Trade Index, where it is described as "HEAD-DRESSES OF THE WORLD. 68 x 36. Nd. (25). As Barratt set BAR-77."
The odd thing here, apart from wondering how the idea suddenly turned up with Ringtons Tea so long after, is the discrepancy in size between the two sets, so if anyone has that set maybe they could have a measure, and confirm. Many thanks in advance.