VHF television services from both BBC and ITV were discontinued in January 1985 as the 405-line TV system was switched off across the UK as a whole.

Technically, with the advent of the temporary MUXES 7 and 8 Moel Y Parc became a K group, and is due to remain so at its 700 MHz clearance.

ITSWW from March 1968 until May 1968[3] HTV Wales from May 1968 405-line television was switched off across the UK and both Moel-y-Parc's VHF transmitters ceased operation after 20 and 22 years of service for the BBC and ITV respectively.

[6] The transmission of the local television "LOC1" multiplex (DVB-t system with QPSK modulation) from Moel-y-Parc on UHF channel 56 with ERP of 2 kW commenced.

[11] With the changes on 27 February 2009, the corresponding frequency of each public service multiplex transmitted from Storeton was also changed to the same as that transmitted from Moel-y-Parc, thereby making each site a constituent part of a single-frequency network (SFN), resulting in a significant improvement in reception quality at locations where signals were being received from both sites but where neither was consistently adequate.

In the past, some English viewers have erected a second aerial for Moel-y-Parc in order to receive a slightly increased choice of viewing, although this practice has declined with the introduction of satellite television and the reduction in schedule variations between different ITV regions.

With the advent of digital television, this has resulted in television tuners detecting the multiplexes broadcast from Moel-y-Parc on the lower frequencies before those on the higher frequencies from Winter Hill during the scanning/retune operation, and without viewer intervention where software allows region selection or by manual re-ordering, placing the Welsh variants on the allocated Freeview EPG logical channel number entries.

Pressure for a distinctly Welsh TV station was one of the driving forces behind the construction of the Moel-y-Parc mast, along with the need to deliver television to the more mountainous interior of Wales, which was out of range of English transmitters.

ITV Granada no longer provides any regional news, weather or local interest programmes related to North Wales.

For many homes across North East and Mid Wales, it is also possible to receive the ITV Central (West) service from The Wrekin Transmitter.

[citation needed] During the time of analogue television, parts of Greater Manchester were subject at times to co-channel interference from Moel-y-Parc because the Saddleworth relay of Winter Hill transmitted on the same frequencies, UHF channels 42, 45, 49 and 52, although mitigated by transmissions from Moel-y-Parc being horizontally polarized and those from Saddleworth being vertically polarized.

Thus when the TV tuner scans the UHF spectrum searching each UHF channel for the presence of a signal for a DVB multiplex, it finds the Welsh variants first and without the software offering the viewer a choice of which regional variant to use, it uses the first transmitter group of multiplexes detected to populate the EPG Freeview LCN entries, and places any alternatives or duplicates on LCNs beginning at 700, regardless of the viewer's preferred regional content or signal quality.