1970s,
1980s,
big finish,
british television, complete lack of explanation,
copper,
david collings,
david mccallum,
david warner,
diamond,
elements,
fanart,
fanfic,
fanvids,
ghosts,
gold,
horror,
icons,
jet,
joanna lumley,
lead,
lisa bowerman,
mark gatiss, medium atomic weights,
nursery rhymes,
periodic table,
pj hammond,
radium,
ruby,
sapphire,
sapphire & steel,
sapphire and steel,
science fiction,
silver,
steel,
susannah york, time breaks, transient beings,
transuranics, val pringle