As far as I know, the MMDS service sends only the digital signals to the NTL box - there is no separate signal for the 15 analogue channels (i.e. the one that you can put straight into the Aerial In socket on your TV or DVD recorder etc.). The non-MMDS service from NTL gives you the separate signal but is only available in certain areas.
You need to connect the NTL box to the DVD Recorder with a scart lead, then connect the DVD recorder to the TV with another scart lead.