As far as i can tell YC has more fibre in the ground than Thus and has VOIP ready next generation switch's.
Not sure if there Notel? layer is VOIP
Am i right in thinking UU have value YC as 0 but future value over 5 years is 99M. So Thus price could be anything, UU want to get shot but have a lot of kit still at substation sites so UU might be tied as to who they can easily sell to, access etc? UU/YC and thus go back a long way and Thus will in all likley have kit etc on similar sites.