Oops, after I replied I saw your message saying a technician has been scheduled - sorry for the hassle but please keep us posted with the outcome of the visit if you can - we'd like to hear this has been resolved for you 🙂
Sorry for getting back so late I completely forgot. Anyway, the technician came and fixed the problem by replacing the splitter housed within the white virgin wall-mounted box. Unfortunately the plug accidentally got yanked out when we were moving the desk so the routers status details (the data he relies on) was reset to zero, due to this he was unable to do a before and after comparison after changing the splitter, though he did have a rough idea of what the numbers were and what they should be. He said he would monitor our connection for a week and to call if anything goes wrong, thankfully the splitter really did seem to be the problem as I haven't had any weird light shows or down time since he left.