I guess I should do a thread with some pictures.. until then, most of the dope on my frame is in these two threads:
http://www.retrobike.co.uk/forum/viewtopic.php?f=12&t=223812&hilit=ken+ryall[url]
http://www.retrobike.co.uk/forum/viewtopic.php?f=23&t=155079&hilit=stan+pike&start=20[/url]
Can you believe I overlooked the word; 'criterium' in the thread title?
TBH the bracket doesn't look particularly high on the Pat Hanlon, and neither is it on my frame, (10 3/8"?) but apart from that, yeah, it makes sense that these are criterium machines- almost a sort of road/track hybrid.
Judging from your pictures, the crown race on that headset is pretty heavy duty- a lighter one could give you another couple of mm. of useable steerer thread, or failing that, IIRC Campag. Gransport headsets are also of a Pista-ish stack height? The Pista crown race is a slip of a thing compared to the Strada.
I used an early '80s Suntour winner 13-22 'compact-6' block on my frame- supposedly 'six in the space of five', which I guess is nowhere near as cramped as 'eleven in the space of six', or whatever they are up to, these days... :?
I used to go on little tours around the lightweight outlets in North London area in the second half of the '70s, so I remember visiting Pat Hanlon's little shop, along with those of Don Farrell, Birds of Colindale, Whiskers, Shorter..