The P272 regulation was first introduced in the UK on the 5th of November 2015. At the time it was considered one of, if not the, largest change in the business and non-domestic energy market within the UK. Since its introduction it has allowed energy suppliers to provide more accurate bills to any companies they supply energy to.
The deadline for all meters that were impacted by P272 to migrate to a half-hourly settlement was the 1st of April 2017.