Possible but very difficult. You’ll have to be super disciplined and try do what most people do in two years in one. Will require hard work and dedication and sacrifices will probably have to be made (less fun, more studying). Good luck to you!
If you are taking A levels with the intention of applying to university, please be aware that WJEC Applied Diploma in Criminology is not accepted as an A level by some universities. An alternative to A levels is an Access to Higher Education Diploma. It's a one-year course that prepares you for study at university in place of A levels. There are fees involved but loans are available. More info on this site: