Next, there are some more 20 codes. I don't seem to have noted the arrival of the 1st and 2nd Class stamps or their Large siblings as M20L MAIL in previous posts. There is also now a 2nd M20L MBIL which I seem to have missed. So here they are now, together with a 10p light tan.
The only other item of interest is a 1st Class from a recent Concrete & Clay book (4+2) which has a quite different and thinner backing which is also very bright when viewed under UV compared to others. It may have appeared before but this is from the Queen edition and is the first I've noticed.
Apologies for the poor quality images in this post. Having already put the stamps away neatly in my albums I was reluctant to undo all my work and risk not being able to remember what should go where so I just used my mobile phone and did not wait for it to focus on some occasions. But you've all seen plenty of 10p stamps and the different codes don't even show on most of them anyway. I should have used old images and no-one would have noticed.