Many thanks Jeff, it seems to be a problem with Flickr as it works sometimes! Links work when embedded in the text, but not always from the Website field within the header block

This will work ....Web Site here https://www.flickr.com/photos/68911555@N03/

however the following will not and its the same URL....

Robin,
Maybe it doesn't work because your website link on this messageboard is http://https//www.flckr.com/photos/68911555@N03

While your Flicker site is
https://www.flckr.com/photos/68911555@N03

Jeff.