Yes, it is, far north of the UK.
I am very familiar with Project Mayflower.
The Plymouth trial tested a particular situation: a one‐for‐one conversion of an
existing service on an existing assignment from AM to DRM, subject to the required
international parameters. As a result, it turned up a number of issues for DRMís use
in the UK if deployed in this manner. It is clear, though, that all of the problems
experienced from a technical perspective can be overcome if there was a willingness
to increase the power of the transmissions, add more medium‐wave transmitting
stations to the network, and re‐plan the use of frequencies.
Radios: MR 27024, 2 x Tecsun PL-660, Eton G3 & E5, Tecsun PL-365
Antenna: Homebrew Magnetic Loop (3-30MHz)
Software: Dream v2.2 (svn924) on Ubuntu 14.04 LTS