We were TUPE'd to Nokia Siemens Networks in 2009 and more latterly this has become Nokia again after we bought out Siemens, roughly the same time that Microsoft bought our handset division.
I am currently working on the 4G rollout contract for EE where we also have a Buy In/Free Carrier obligation to H3g so expect to see their coverage broaden and improve. Additionally where Three don't currently have coverage the fallback is to roam onto 2G with A.N.Other operator so you should still have coverage but poor data speeds.
We have in the region of 6300 EE sites to upgrade to 4G and I am personally involved in the North of England and Scotland which is an equal split of circa 1100 sites each.
I find there is very little to differentiate coverage in the urban areas these days but rural areas can be different with Vodafone and O2 tending to take the lead.
And no I can't do cheap I-Phones
