It's not. It's derived from Germanic languages.
The romance languages (Portuguese, Spanish, Catalan, French, Italian, Romanian, Friulian, etc.) are derived from Latin, but not English.
English has words derived from Latin, but only because English speakers have a great habit of borrowing words from other languages.
Germanic languages are not derived from Latin, they are derived from the same languages as Latin, but they formed into two separate branches. I know Modern English (and really most modern languages) are a hodgepodge of influences. But I've noticed that people think English derived directly from the language of the Romans.