Registrant type: UK Limited Company, (Company number: 3592271) Registrant's address: Network HQ London London NW9 5AB United Kingdom
Companies house lookup on the company name gives
TELECOMMUNICATIONS MANAGEMENT LIMITED
NETWORK HQ 508 EDGWARE ROAD
Searching on the postcode, it looks like it is part of utility warehouse.
Though that's not necessarily the prices it will charge for the new business and there's no server yet on the 1pmobile web address.
Considering that Talkmobile pay as you go (Vodafone's own budget brand) already offer UK calls for 10p (for all calls up to one hour)..... there is some stiff competition. I suppose 1p per minute would be good for short calls.