Re: No Surprises there
"Logically, I understand why. They have a lot of customers in London. They probably don't want to try out any changes that may break the network. Far easier to try them on smaller areas."
It's usually down to local restrictions - cobbled streets is surprisingly common, TfL, other utility providers - that limit what can be done easily/quickly (in less than a year). And if it is fixable, its a very low priority unless you pay for it.
Having dealt with a number of business moves in London where the businesses have had preferred vendors, I should also add landlord stupidity into the mix. While most are reasonable, some caveats to allow work suggest they maybe planning to torch the place and blame the telco...