I have been away and haven't yet had a chance to adjust the BT Hub5 settings as suggested by Repassac. However, On Demand via my Sky+ box was working fine until my subscription ran out last week. I have since connected an old Now TV box and all the On Demand players work well via this device with a wireless connection. I also continue to access all the On Demand players via iPad and computer.
I would be interested to hear from anyone who has bought a Humax HDR-1100S in the last few weeks and has successfully connected to the On Demand services and Showcase.