This doesn't help getting a paper copy but.........
it is not a Statutory Instrument it is Statutory Guidance approved by parliament. It is not published by the HMSO. It is a DCMS publication so they are responsible for their own publication arrangements.

The Guidance says:

Any enquires about the content of this Guidance should be made to:
Licensing Communication Strategy Branch
Department for Culture,Media and Sport
Tourism Division
3rd Floor
2-4 Cockspur Street
London SW1Y 5DH
Telephone:020 7211 6347
email:alcohol.entertainment@culture.gov.uk

If they won't answer the phone bombard them with e-mails!