s/suppliers/billing_companies
As title. Nobody ever switches electricity supplier unless they physically move. there is only one DNO in an area.
No, not having a go at you personally DavCrav but the misuse of the term 'supplier' gets my goat. Telecomms is much more fluid as there are actually multiple service providers (although the physical line for a landline might be tied to openretch in a non cabled area)