The links thing, with thanks due to Debs (aka Buttercup) from the Crafts by Carolyn forum.
(In Blogger) What you need to do is
type the words that you want to be a hyperlink ie Northumberland photos,
click on the little hyperlink button at the top of the post editing panel
when the pop up box appears, type or paste in the URL you want the link to go to ie the http link to your gallery