We're in the process of producing more information and an FAQ about this migration which will happen on 1st May. Newnet has been part of Timico for several years but has been managed on a seperate set of systems. Although we merged the physical network during the last 12 months we now need to move Newnet customers onto the Timico billing system because the old Newnet billing system is very old and has become unsupportable.
The Timico billing system doesn't cater for 'pre-pay' usage and very few ISPs do this any more. So we're bringing all ex-Newnet broadband products in line with the Timico ones. I do realise for some customers that doubling usage allowances doesn't necessarily compensate exactly for removing overnight unlimited usage, but for other customers it's a good thing.
But we do offer unlimited FTTC products if that helps - details here: http://www.timico.co.uk/services/managed-networks-co...
Happy to answer any other questions if I can?