The Teachers' Pensions Regulations 1997

13.  Subject to paragraphs 14 to 19, these Regulations apply as if the person had been one person in relation to pensionable employment (“the earlier employment”) up to the end of his employment at the previous rate and a separate person in relation to pensionable employment (“new employment”) from the start of his employment at the reduced rate, and accordingly apply separately in relation to each of those employments.