When applying through UCAS and stating my qualifications, do I need to specify the individual units I am taking for my A Level subjects, eg. for Maths do I need to specify that this year I am taking C3, C4 and S2?
No, just the course and exam board you're doing. That being said you can add units and grades to previous qualifications but it really isn't a big deal, if there's any UMS that are particularly good then ask your teachers to put them in your reference. ☺️
When applying through UCAS and stating my qualifications, do I need to specify the individual units I am taking for my A Level subjects, eg. for Maths do I need to specify that this year I am taking C3, C4 and S2?