adjectives - Possessive of a word that is already possessive

If the cricket ground Lord's is a possessive, what if you want to describe something belonging to Lord's? Would you say:

I was very impressed by Lord's's customer services.

It doesn't look right, so what is the correct way of writing it?

Answer

I think you kind of answer your own question. If "Lord's" already is a possessive, then there's no need to turn it into a possessive even further. I would just say "Lord's customer services", much like I would say "McDonald's burgers" and "Ben & Jerry's ad slogan" and not "McDonald's's burgers" and "Ben & Jerry's's ad slogan".