will a btec get me into uniWatch
Don't worry, you'll definitely get into university with that qualification.
A BTEC Level 3 is equivalent to 3 A Levels I believe (someone correct me if I am mistaken). If you'd like to study a sports related course then I'd recommend to start looking at Loughborough, the best in the country for sports related courses (that's if you want to study a sports related subject).
3 A Levels = 1 Level 3 BTEC
Maybe consider another uni?
Level 3 diploma- 1 A level
Making it clear .