SAS doctors should be referred to by the contract they are on, for example specialty doctors, specialists, associate specialists or in short, SAS doctors.
Employers are advised not to use the term middle grade to refer to SAS doctors as there is no such grade. Employers are also advised not to use the term middle grade rota but instead use more acceptable terms such as SAS rota or where the staff groups are mixed, it may also be referred to as higher specialty trainee and SAS rota.
Your regular reminder that #SASdoctors and #SASdentists should not be referred to as "middle grade".
(and if you need further reason to avoid it, check out the middlegrade hashtag on this or other social media sites)