Update on Doctor Who stamp issue - PSB technical details

Only yesterday, I wrote Royal Mail have now confirmed the following technical details for the Dr Who Prestige Stamp Book:  except that my contact told me the credits detail shown in the book.  Collectors will know that the PSB details  often get the printer/process details wrong.

From another Royal Mail source, we have been told that this is the true situation:

Doctor Who panes on ordinary gum printed in lithography by Cartor Security Print.

Miniature sheet pane is self-adhesive, and printed in litho by Joh Enschede Stamps Cartor Security Print.

Machin/Tardis pane on ordinary gum printed in gravure by Walsall Security Print. Only the Machin stamps have security print - we expect these to be MPIL and M12L (now confirmed, by those who already have stock!)
 

Full list of the 30 stamps in this Doctor Who celebration:

11 x 1st images of Dr Who actors - ordinary gum, litho by Cartor

1st class 11th Doctor - self-adhesive in retail booklet gravure by Walsall Security Print
1st class 1st Doctor - self-adhesive in retail booklet gravure by Walsall Security Print

1st Tardis (self-adhesive) - in miniature sheet gravure by Enschede

1st Tardis (self-adhesive) - in PSB pane showing miniature sheet litho by Enschede Cartor

1st Tardis (self-adhesive) - in Generic Smiler Sheet - probably litho by Cartor

1st Tardis (self-adhesive) - in retail booklet gravure by Walsall Security Print

1st Tardis (ordinary gum) - in PSB definitive pane gravure by Walsall Security Print

2nd class Dalek - in miniature sheet gravure by Enschede
2nd class Dalek - in miniature sheet PSB pane litho by Enschede Cartor

2nd class Ood - in miniature sheet gravure by Enschede
2nd class Ood - in miniature sheet PSB pane litho by Enschede Cartor

2nd class Cyberman - in miniature sheet gravure by Enschede
2nd class Cyberman - in miniature sheet PSB pane litho by Enschede Cartor

2nd class Weeping Angel - in miniature sheet gravure by Enschede
2nd class Weeping Angel - in miniature sheet PSB pane litho by Enschede Cartor

5p Machin definitive with iridescent layer, gummed, gravure by Walsall Security Print
10p Machin definitive with iridescent layer, gummed, gravure by Walsall Security Print
20p Machin definitive with iridescent layer, gummed, gravure by Walsall Security Print
87p Machin definitive with iridescent layer, gummed, gravure by Walsall Security Print

Updated 27 February.

---