Whatever happened to HDG Networks Ltd? HDG Networks Ltd is our official business name, but we trade as fairly marvellous. HDG no longer provide IT Support or online backup services. HDG Networks Ltd is registered in England and Wales under No. 6387326 with its registered office at 70 Columbia Avenue, Whitstable, Kent CT5 4EH. Pay an HDG Invoice Got an HDG invoice to pay? Don't worry, we're the same people, you can pay it here instead!