So they are importing the call centre staff from India etc.. ? Or employing existing immigrants here?
The location of the call centre is irrelevant, if it has the same tired scripts and incoherent staff then where is the advantage?
Location is relatively unimportant.
Technical competence is the primary issue, followed closely by the ability to understand and speak English clearly. Strong regional accents can be problematical, irrespective of whether the Call Centre is in London, Glasgow, Tyneside, Merseyside, Belfast or Mumbai.