If you have the budget and the discipline to complete the 12-week program, this is arguably one of the best C1 investments available. If not, use her free vocabulary lists as a starting point—but know that true C1 fluency requires the active production system that only her paid academy provides.

: Using English effectively for social, academic, and professional purposes. How to Reach C1 with Lucy’s Style

Suitable as supplementary material only; not sufficient as a primary C1 resource.

: Mastering roughly 8,000 words , including phrasal verbs, idioms, and professional terminology.