I haven't been to any of the concerts yet but someone in one of the post-show threads (see
  http://www.morrissey-solo.com/comments.pl?sid=2890&op=&threshold=0&commentsort=0 &mode=thread&cid=36085 ) identified it as "Part-time Punks".

Here's some more information about the TVP's "Part Time Punks". The song is taken from the group's second single, the "Bill Grundy" EP, released in 1978. It documents the decaying London punk scene, which by this time had started to attract the cartoon punks with their identikit leather jackets and mohican haircuts, far removed from the original DIY spirit of the punk movement. The single - and this track in particular - was a great favourite of DJ John Peel, who played it every night for weeks. This led Rough Trade to pick up the single and reissue it, where it sound in greater numbers.
It's ironic that Morrissey should include this song on his tour tape, as Dan Treacy (he being to most intents and purposes Mr Television Personalities) wrote a less than flattering song about Moz in the mid-80s, which was only performed live. You can read the lyrics here.
http://www.televisionpersonalities.co.uk/lyrics/rainone.htm

PART TIME PUNKS
Walking down the Kings Road
I see so many faces
They come from many places
They come down for the day

They walk around together
And try and look trendy
I think it's a shame
That they all look the same

Here they come
La la la la laaa la
La la la la laaa la
The part time punks
(repeat)

Then they go to Rough Trade
To buy Siouxsie & the Banshees
They heard John Peel play it
Just the other night

They like to buy the O Level single
Or "Read About Seymour"
But they're not pressed in red
So they but the Lurkers instead

Chorus

They play their records very loud
They pogo in the bedroom
In front of the mirror
But only when their mum's gone out

They pay five pence on the buses
And they never use toothpaste
But they got two fifty
To go and see the Clash tonight

Chorus

The Part-Time Punks
The Part-Time Punks
The Part-Time Punks
Woooooo

I'm "Westham-Sven" and I am sorry to tell you that I had to remove all the mp3-files on my site because of an email from the lawyers of some record companies who accused me of piracy.

All the infos about the songs are still there but the download gives you a 404.