My plan is to get something like this: http://www.aliexpress.com/item/New-1080P-LKV373IR-HDMI-Extender-with-IR-by-LAN-Transmitter-Receiver-1x-Transmitter-2x-Receiver-P0015251/1983462362.html
and another receiver unit, put the MySky box in the comms cupboard and do it that way. TV points in the lounge have 3xCAT6 and 3xRG6, Bedroom TVs have 1xCAT6 and 1x RG6.
Any one got any better ideas how to do it? Would love to do a Freeview modulator, but they are around the $1000 mark so a bit over what I'd like to spend.