This is an attractive and light weight (i.e. mostly plastic) 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 (see below). The typewriter is a British made and locally branded version of the Smith-Corona Corsair.
Unfortunately, the typewriter doesn't work that well. A number of the hammers get stuck including the one for the letter A which is awkward (especially as you can't even type the word). Externally, the typewriter looks to be overall in decent condition and apart from the issues lifted above seems to be largely mechanically sound, so it may be fixable.