Ok this post has got me inspired to return to my search of finding "Boots Hair Gel". UK people:

I bought "Boots Hair Gel" at Boots (obviously) drug store in London years ago. I loved it so I stocked up. Now I am all out. If anyone knows if they still sell it let me know. I would love to get some more.

I don't have a picture of it, but it basically is a clear gel in a "salsa, cheez whiz-like" blue container.