Hello David,
I don't know what the deal can have been, but while this Peto Scott set appeared under several brands Philips isn't one of them. The board was used for years, it's much the same as the late '50s Defiant A5 except that used Ediswan transistors.
https://www.radiomuseum.org/r/co_op_defiant_a5a.html
Alba models used it too,
https://www.radiomuseum.org/r/balcombe_alba_22.html ,
and a version was offered for home constructors under the name Contessa.
https://www.radiomuseum.org/r/henrys...ssa_mkiii.html .
Paul