when did wirral postcode change from l to ch
CH postcode area The CH postcode area, also known as the Chester postcode area,[2] is a group of postcode districts covering parts of north-west England and north-east Wales. Having previously roughly covered the former Chester district and present-day Flintshire county, postcodes for the Wirral Peninsula (CH41-49, 60-66) were transferred to it in 1999 from the L postcode area.[3] It includes Birkenhead, Chester, Ellesmere Port, Neston, Prenton and Wallasey in England and Bagillt, Buckley, Connah's Quay, Flint, Holywell and Mold in Wales.