You are right.
I have sent an email.
Strange situation anyway. I am wondering if RL made mistake when they convert US size in UK Size. Some brands convert size brutally like just remove 1 from American size to English size wich is not true and depend of the original size (this is not linear).
My experience :
Alden Grant and Aberdeen : 8.5US
Alden Barrie : 8US
Trickers 4444 : 8UK
Pembroke (a try) : 7.5UK a little bit narrow 8UK a little bit large but more better).
Skye3 (try) : 7.5uk perfect.
I would be surprised that my Marlow in 325 would be a true 7UK.