Branding under GBR is still a mystery mostly. We don't really know if it will all be one thing under the GBR brand, or whether it will be regionalised or sectorised. For now, all that is happening is that all TOCs are being put under DFTO/government control, therefore the branding will not be changing anytime soon. This is nothing new, many TOCs, in fact including Northern, have been under government control for a while now, so really Northern is already nationalised in a sense.