They were a UK electronics retailer. There's a wiki article with some info: https://en.wikipedia.org/wiki/Rumbelows https://en.wikipedia.org/wiki/Rumbelows Sad

They were a UK electronics retailer. There's a wiki article with some info: https://en.wikipedia.org/wiki/Rumbelows https://en.wikipedia.org/wiki/Rumbelows Sadly, it doesn't touch on the symbols of the logo