Calculators: Binatone
Binatone was originally founded in 1958 in the UK by the two brothers Partap and Gulu Lalvani.  It is now a part of Euro Suisse, a Hong Kong based company,  that is still around today.  They were the first to issue an electronic video-game machine in the UK and had a wide range of calculators that look like branded versions of generic models.  They were also a familiar name in electronic musical instruments.  They are even famous for buying the rights to the (not very successful) Sinclair's Pocket TV's (and calculator) intellectual property.  You can see many of these model in Same Calculator.