Looking really smart, looks like we'll have a little group of Super U/Castorama replicas when Kettlo gets his pics up. I am in the process of building my team replica too, the frame is at Argos Cycles as we speak and I'm busy collecting all the bits to make up the whole bike - just rear dérailleur and brake levers to go!
What rims are you using? I managed to get a pair of NOS Michelin Hi Lite Comp (700x23C) a few weeks ago via Ebay and they really look the part.
From what I can make out the team used ITM bars and stem rather than 3TTT, although I have chosen a pair of 3TTT Paris Roubaix bars as I like the internal cable routing but have gone for an ITM stem. What bar tape are you going to use? I had a go at the tricolour design on my 531C (see below) but it met with very mixed reviews on here. I quite like it so can't decide to use that on my replica or just plain white.
Have you chosen a saddle yet?
Loads of questions I know, I am really keen on these bikes and am now able to fulfil a 23 year old desire!
1989 Raleigh 531C Race
1990 Raleigh Dynatech Castorama replica
1991 Raleigh Dynatech Lo Pro TT
2012 Raleigh Airlite Campagnolo Centaur 10 speed
2013 CYFAC Proxidium Campag Athena 11 Speed
2013 Team Europcar Colnago C59 KoM edition