This is an attractive and light weight portable typewriter from the 1970s, the Adsit Graduate is in fact a product of Smith-Corona as it states on the back of the machine. The typewriter is a British made and locally branded version of the Smith-Corona Corsair.
The typewriter doesn't work too well unfortunately, a number of hammers get stuck including the letter A which is awkward (especially as you can't even type the word). The typewriter looks to be overall in decent condition though and largely mechanically sound so it may be fixable.