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Davies, who also wrote acclaimed TV dramas Queer As Folk and It's A Sin, added that he felt it was harder to write using "a narrow window" of references.

Debbie Davies, the bride in one of the photos shared in the online appeal, said everyone was "very grateful" for the detective work.

The first is the stream of thought going back to Ross Ashby known as “management cybernetics,” which Davies clarifies.

"There's no song contest without the great man himself, and it was an honour to welcome Graham Norton to our studios in Cardiff," Davies said in a statement.

Alun Davies, national secretary in charge of steel and metals for the Community Union, said the raw materials issue was an "extreme emergency" .