Statutory instrument
What it is
An order, regulations or rules made under an Act.
How to cite using OSCOLA
Name (year included), then a comma and the SI number. Scottish instruments take SSI, Northern Ireland rules SR, pre-1948 instruments SR & O. Pinpoint with reg, art or r.
Example citation
Penalties for Disorderly Behaviour (Amendment of Minimum Age) Order 2004, SI 2004/3166.
Last reviewed 7 August 2026 · always confirm the rule against the official OSCOLA.