Okay, so I have geeked the fuck out of this one so bear with me:
Firstly, when he plays it live
around the time that the album was out, the intro sound was almost definitely just the Marshall with jumped channels, 52 reissue tele on middle pickup and maybe
with a little turned down on the tone knob on the tele. The Boss DD-3 is used and Graham responded to a Twitter question confirming that it's "it's a bout 3 echoes with 8th timing". On the Southbank show there was a clip showing the delay setting briefly that he uses live on the Boss DD-3 and it's roughly:
E.Level - 3 o'clock
Feedback - 7 to 8 o'clock ish (just set it so you have about 3 echos)
Delay time - around 11 o'clock I think from memory
Mode - 800ms I think, or whatever to give you delays on the 8th
Exhibit A: https://www.youtube.com/watch?v=Qw8j3Qrp6wY
" onclick="window.open(this.href);return false; what a flipping' awesome guitar sound
I posted a question some time ago on the old forum to Graham about the sound in Beetlebum and he stated rat+marshall but I'm almost certain he meant the outro because he stated on Twitter when asked by a fellow geek 'what pedal(s) do you use in the solo/break in beetlebum?'
"it's a rat dist (11 o'clock--1oclock--3oclock) and the delay set to 8ths- like in the intro and verses"
Now I have a Rat and a marshall and that is perfect for the outro sound when combined with a slightly overdriven marshall and there is no way that a rat set up like that gives you the intro sound
On the Blur album version, I'm less sure what's going on because I think it's a tele but not sure what amp/pedal combo is going on on the intro. The outro is definitely the rat.
So, in summary:
1) I need to get a life, but I love guitars and Graham's sound so fuck off
2) Live he plays intro as overdriven marshall on jumped channels with a Boss DD-3, tele middle pickup selector setting and possibly with slightly turned down tone knob
3) for the chorus the DD-3 gets switched off
4) for the outdo he stomps on a rat (11 o'clock--1oclock--3oclock) and has the DD-3 switched on