Extrinsic aids are materials found outside the Act which the judges may use to interpret the act.
Dictionaries- dictionaries can be used to find the literal meaning of non-legal words and the aid is useful when judges are applying the literal rule for example in Vaughan v Vaughan. The CoA used the dictionary to interpret the word 'molest'.
The Interpretation Act 1978- This provides definitions of certain words which are often used in Acts, for example it provides that masculine includes the feminine and singular words include the plural.
Report of the Law Commission and other law reform bodies- these highlight what is wrong the old law…