On this site, you will find information on a special route for students who are quite good at English, level B1+.
This route is designed to prepare you for the Cambridge Exams, which you can do when you are in 3M/4H/5V.
This route could replace your work for Holmwood's, or you can do both routes alongside each other.
The basic Cambridge Portfolio Route will earn you 10 XMs, and you can extend the portfolio to include more work and thereby earn more XMs.
Please be advised that this is not an easy route: it will require careful planning and a sense of awareness of what you're doing and why.