Maths
Biology
Chemistry
Physics
Computer
English
Environmental management
You didn't answer all my questions. What were your subjects in your IGCSEs/O-Levels and what did you score? Also, when and how would you be appearing in your AS and A2 exams i.e. which year and which session would you appear in which subject, would it be a staged assessment (AS and A2 separately) or combined.
Off the top of my head, your subject combination is in general, very difficult. Sciences are the hardest subjects in A-Level, and you have topped them off with Mathematics, another hard subject. I don't know a lot about Computing but I doubt it's very easy. Environmental Management, on the contrary, is a half-credit qualification and is easy to score an A in. English is also very tough, and I know pupils who have scored A's ( modern day A*'s) in all their Science subjects and Math, but with terrible grades in English.
So strictly speaking: your subject combination is probably very hard to maneuver and you're likely to
not obtain 7 A's/A*'s in them; of course, like I said before, every student has his own potential and depending on his situation, he may prove successful in something another is unsuccessful in. So, if you could share with us your IGCSE results and plans for how you would appear in your A-Levels, I could respond to this more effectively.