The clauses that you quoted from your contract appear to be variations of saying simply that you are "employed at will." This is legalese to mean that you have agreed that your employment may be changed or terminated at the pleasure of the employer. Of course, this ability doesn't mean that your employer can violate local or national laws that protect you in the workplace. Neither employees nor employers can waive the rights and obligations that laws provide. As a practical matter, at-will employment is a way for your employer to dismiss you if and when it chooses (again, aside from any obligations that laws require). In the United States, at least, reasonable accommodations to workplace disabilities means that an employer must provide reasonable (but not extraordinary) ways for you to do your job with the least amount of disruption to the workplace. I suspect that the same is true under U.K. law. I wouldn't worry too much if I were you. They can have their at-will clauses, but the clauses probably won't change anything about the U.K. Equality Act 2010 and its provisions. Just be honest and forthright with them.