Likely to be an RGD 2351T.
The later L1700 has a similar appearance.
It is a genuine RGD set and was made before the company was acquired by Regentone. Being a real RGD means it is beautifully over-engineered.
From the RGD museum:
http://www.rgd.org.uk/rgd_exh_pg_2351T.htm
DFWB.