Baronlando said:

That's pretty cool! It looks good too. makes me wonder 2 things: did the 1981 release make it to Britain? and did they make all entirely new prints for it, or did they just put the new crawl into existing prints? (Or just replace the first reel?)

Yes mate!

They did a limited engagement in 81' showing both Star Wars and Empire Strikes Back back to back.I went to watch it at my local theatre here in cambridge(UK). I was 7 at the time and was blown away.Still to this day...the most awesome cinematic experience ever!

Found this blogger who also saw them back to back.He thinks he saw it in 1982.I am pretty sure it was 1981!:

"Another year later I saw both films back-to-back as a double-bill in a British cinema, not bothered by not being able to speak English, knowing both stories by heart."

http://twitchfilm.net/featured/2009/07/twitch-o-meter-the-ten-megaton-tom-twitch-o-meter-turns-10.000.000-part-2.php

Just found this poster...it was 1981:

http://www.icollector.com/Star-Wars-The-Empire-Strikes-Back-1981-double-bill-UK-Quad-Cinema-Poster-30-x-40-Linen-Backed-cond_i5245832