band related sites

Official Myspace (the name says it yet)
Unofficial Myspace (free music streaming)
Unofficial Myspace 2 (more free streaming)
MAD Tourbooking (for bookings outside the UK)

befriended bands

The Dipsomaniacs (side project with three Upstarts members)
Crashed Out (street rock'n'roll. Chris used to sing in the Upstarts during Mensi's absence)
Red Alert (Sunderland's second best ;-) )
Red London (Gaz' former band)
Stage Bottles (German counterparts)

record labels

Captain Oi! (CD reissues of most of the band's earlier releases)
I Hate People (German label, releases the split with Crashed Out)
Insurgence (Canadian pressing of 'Sons of Spartacus')
Knock Out (vinyl issue of 'Sons of Spartacus')
Mad Butcher (released 'Anthems Against Scum' and distributes some merch)
TKO (US label, released 'Live from the Justice League')

other sites

Sunderland AFC (the band's favourite club, except for Neil, who's a Newcastle United fanatic)
Street Voice UK (Blog on Oi!, punk music and anti-fascism)
Oioimusic.com (webzine for Oi! punk mod ska reggae by this site's webmaster)