These Regulations amend the Police Pensions Regulations 1987 and the Police Pensions (Purchase of Increased Benefits) Regulations 1987 as they apply in England and Wales. The amendments make provision for part-time police officers' pension benefits to be calculated as if they had been full-time officers, and then pro-rated for periods of part-time service. This replaces the previous basis of calculation under which part-time working counted as pensionable service on the basis of the actual hours served. This disadvantaged part-time officers because under the Police Pension Scheme reckonable service is accrued at a faster rate after 20 reckonable years.