What Kevin means is – how old? Depending on the area of the Regs that affects your case and the period spanned, it may be that the version in force immediately prior to March 06 is what you need (if so, it’s still up on the DWP Blue Volumes site: [url]http://www.dwp.gov.uk/advisers/docs/lawvols/bluevol/pdf/a8_2601.pdf[/url]).
But if you need something from an earlier era, like an old Reg 11 case, you would need to look somewhere else – it might be very easy or very hard to find the right version. Depends what you need.
But for a bog standard snapshot of the Regs as they were immediately prior to consolidation, follow the link above.