Comment by xiphophilos:
The blue/white A side label (image 2100274) has a D above a T stamped into the area to the left of the spindle hole. This is an example of a repress with the first DT (Double Tax, 66⅔%) purchase tax code that was in force between April 15, 1942 and April 13, 1943. The TT (Triple Tax, 100%) tax sticker must have been attached in mid-April 1943, when the next purchase tax rate was introduced. See
http://www.78rpm.net.nz/mechcopy/mech7.htm
By the way, these tax rates, imposed on luxury goods, are truly staggering. Compared to that, the current UK VAT of 20% is modest, but it also covers far more goods and services.