Suspended Ceiling Install

Hi Looking at doing a diy install of of suspended ceiling in my garage which i'm partly conventing soon. Need a suspended ceiling as there are water heat pumps etc fitted close to existing ceiling. Can anyone suggest a company that provides such a ceiling. Would like one that someone has used in past if possible. Is there any high street diy superstores i.e wickes, homebase etc that sell suspended ceilings? One other question. Need to have my electric meter moved approx 12' from converted end of garage to other end. How much roughly? And who can do it, electrican or electricty supplier? Cheers T
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