MXR Severn Estuary
MXR Severn Estuary was a regional commercial digital radio multiplex in the United Kingdom, which served the West of England and South Wales, including Bristol, Bath, Weston-super-Mare, Cardiff, Newport, Swansea, the South Wales Valleys and north Somerset. The multiplex closed on 29 July 2013 after the shareholders Global Radio & Arqiva decided not to renew the licence.
Transmitters
MXR Severn Estuary was transmitted on frequency block 12C from the following transmitter sites:| Transmitter | kW | Area |
| Wenvoe | 4 | Cardiff & Vale of Glamorgan |
| Dundry East | 1 | Bristol |
| Christchurch | 1 | Newport & Monmouth |
| Mendip | 0.75 | Glastonbury |
| Kilvey Hill | 0.5 | Swansea & Bridgend |
| Carmel | 0.5 | Carmel & Carmarthen |
| Ebbw Vale | 0.2 | Ebbw Vale |
| Bath | 0.2 | Bath |
| Abergavenny | 0.2 | Abergavenny |
| Aberdare | 0.01 | Aberdare |
Services
The following channels were available on the multiplex at the time of closure:| Service | Service ID | Bit rate | Audio channels | Description | Analogue availability |
| Swansea Bay Radio | C784 | 64 kbit/s | Mono | Classic & Current Hits | 102.1 MHz |
| Capital South Wales | C9CC | 128 kbit/s | Joint stereo | South East Wales' CHR Music Service | 103.2 MHz 97.4 MHz |
| Kiss | C3A5 | 128 kbit/s | Joint stereo | National dance and urban music station | 97.2, 101.0 MHz |
| LBC 97.3 | CFC6 | 48 kbit/s | Mono LSF | London-based speech service | — |
| Mountain FM | CEC3 | 64 kbit/s | Mono | Regional DAB service | — |
| Nation Radio | C376 | 64 kbit/s | Mono | South Wales rock music service | 106.8 MHz 107.3 MHz |
| Heart | C3A3 | 112 kbit/s | Joint stereo | South Wales regional commercial service | Various FM |
| Real Radio XS | C8C5 | 80 kbit/s | Mono | Classic rock service from Manchester | — |
| UCB Gospel | CED0 | 64 kbit/s | Mono LSF | Gospel music | — |
| UCB Inspirational | CFD0 | 64 kbit/s | Mono LSF | Christian Speech & Music | — |
| Radio X | C0B8 | 128 kbit/s | Joint stereo | Modern rock service from London | — |
| DAB Guide | E1C0009A | 8 kbit/s | Data | Hidden service, EPG data | — |
| UBC Digital | E1C000A2 | 48 kbit/s | Data | Hidden service | — |
- BBC Radio Cymru and BBC Radio Wales were not required to be broadcast on this platform.