As it looks as though Fibre is on its way, I need to look at how I'm going to deal with the separate modem/router scenario. The only potential difficulty is that the modem will need to be in the roof space adjacent to the incoming BT socket. I've not had problems with kit installed up there in the past - temperature being the obvious one - but you never know.
Could someone point me in the direction of a spec sheet for the two BT installed modems? I'm mainly after the overall dimensions and any details of vertical mounting, hole spacing etc. I'm taking it as given that the connection between these modems and any downstream router is standard Cat5/RJ45 rather than modem cable/RJ11.