This rule gives judges more discretion that allows them to look back to the gap in the previous law and interpret the act to spress the mischief
Smith v Hughes

S.1 of the Street Offences Act 1959 made it 'an offence for a common prostitute to loiter or solicit in a street or public place for the purpose of prostitution. Six women appealed against their convictions claiming they had not been 'in a street'. All women had been in behind open windows or on a balcony calling to meen. They argues they were not in a street or public place.
Eastbourne v Borough Council v Stirling

Taxi driver charged with 'plying for hire in any street' without a license to do so. He was parked on a taxi rank on the station forecourt
Royal College of Nursing v DHSS
The Abortion Act 1967 states that 'a termination must be carried out by a registered medical practitioner'. Only doctors were registered as 'medical practitioners'. In this case, the first part of the procedure was carried out by a nurse. Due to medical advances from 1972 onwards, aboritions could be ccarried out by giving drugs to induce labour. The first part was carried out by a doctor but the second part was carried out by a nurse without a doctor being present.
