W201/190e sill rust repair

[finnoctane]

Hi, just wanted to know if anyone has repaired rust on the sills/rocker panels of a 190e? (Searched and couldn't find anything specific to the 190e) I've found a few areas getting a little flakey that need attention fortunately not near the jacking points. The car has been in the family for well over 20 years so the reason to want to repair it is sentimentallity.

Fortunately it's possible to buy replacement sill/rocker panels (link for example) so hoping someone may be able to point me in the direction of a bodywork shop in ideally SE London/Kent.

Thanks in advance!