The Lifts Regulations 2016

[F13.3.3.  The installer shall keep the approved body that has issued the design examination certificate informed of any modification to the approved design that may affect the conformity with the essential health and safety requirements set out in Schedule 1 or the conditions for validity of the certificate. Such modifications shall require additional approval — from the approved body that issued the design examination certificate — in the form of an addition to the original design examination certificate.]U.K.