SI 2019 No. 50

http://www.legislation.gov.uk/wsi/2019/50/contents/made

Footnote 8

https://smokecontrol.defra.gov.uk/fuel-details.php?id=0001#footnote8

SI 2002 No.3046

http://www.legislation.hmso.gov.uk/si/si2002/20023046.htm

SRNI 2003 No. 450

http://www.northernireland-legislation.hmso.gov.uk/sr/sr2003/20030450.htm

SSI 2005 No. 614

http://www.opsi.gov.uk/legislation/scotland/ssi2005/20050614.htm

SSI 2007 No. 56

http://www.opsi.gov.uk/legislation/scotland/ssi2007/20070056.htm

SSI 2008 No.154

http://www.opsi.gov.uk/legislation/scotland/ssi2008/ssi_20080154_en_1

SSI 2008 No.295

http://www.opsi.gov.uk/legislation/scotland/ssi2008/ssi_20080295_en_1

SI 2001 No.3745

http://www.legislation.hmso.gov.uk/si/si2001/20013745.htm

SI 2001 No.433

http://www.scotland-legislation.hmso.gov.uk/legislation/scotland/ssi2001/20010433.htm

SI 2002 No.527

http://www.scotland-legislation.hmso.gov.uk/legislation/scotland/ssi2002/20020527.htm

SI 2014 No. 491

http://www.legislation.gov.uk/uksi/2014/491/contents/made

SI 2013 No. 447

http://www.legislation.gov.uk/uksi/2013/447/contents/made

SI 2012 No. 399

http://www.legislation.gov.uk/nisr/2012/399/contents/made

SI 2012 No. 814

http://www.legislation.gov.uk/uksi/2012/814/contents/made

2011 No. 2105

http://www.legislation.gov.uk/uksi/2011/2105/contents/made

SI 2011 No. 715

http://www.legislation.gov.uk/uksi/2011/715/contents/made

SI 2010 No. 576

http://www.legislation.gov.uk/uksi/2010/576/contents/made

SI 2008 no.514

http://www.legislation.gov.uk/uksi/2008/514/contents/made