| Fuel ID: (England) | 0058 |
| Fuel ID: (Wal, Scot & NI) | 0058 |
| Fuel name | Sovereign briquettes |
| Manufacturer | Monckton Coke & Chemical Company Limited at Royston, near Barnsley, South Yorkshire |
| (a) | comprise anthracite (as to approximately 75% of the total weight), coal and reactive coke (as to approximately 21% of the total weight) and cold-setting resin binder (as to the remaining weight) |
| (b) | were manufactured from those constituents by a process involving extrusion |
| (c) | are unmarked hexagonal briquettes |
| (d) | have an average weight of 130 grams per briquette |
| (e) | have a sulphur content not exceeding 2% of the total weight. |
| England Status Date first authorised |
Authorised (Footnote 3)
01/01/1900 |
| Wales Status Date first authorised |
Authorised (SI 2015 No. 1517)
01/02/1900 |
| Scotland Status Date first authorised |
Authorised (Footnote 4)
01/03/1900 |
| N. Ireland Status Date first authorised |
Authorised (Footnote 6)
01/04/1900 |
Sovereign briquettes
Available information about this fuel is shown below: