Hi, so an MPhil or an MRes are research degrees, so you would have to conduct a research project. This would be difficult to do part time if you are not able to be at university at some point through the working week. Your supervisors would generally expect to see you and you would likely be expected to undertaking some mandatory training sessions within your department. The study is flexible, in that most people will not have set hours or days, but probably not so flexible that you can only work evenings and weekends. It's more like being part time you would be expected to be in 1-2 days a week, Mon to Fri.