I've had one of these damn things for years. Cannot get anywhere with it. Thought it might be Bagley with the four digit number, but seems not.
The picture of the wooden box looks interesting, pity there is no more detail.
The only other manufacturer I know that used "MADE IN ENGLAND" was Davidson, but I doubt that they made it, but!!
Sorry not to have been able to help.
Good luck. If I ever find out, I'll update!
Nos.