recommend good garage for chassis work?

[Gerymor]

Can anyone recommend a good place in the NorthWest (Stockport ish?) to get some preventative work done on the Chim chassis. It's a 1996 500 only 23k miles always cocooned and never needed chassis work but I now want to get the surface rust scraped off (nothing major like body off!) and protect steel with some coating, what?
I'm not a DIY'er so who can I trust to do a good job?
Thanks

[Gerymor]

Thanks everyone for their replies, lots of good help ta! 😊