"Obviously, there are still some differences. In the Latin of antiquity the letter c is only used to represent the sound which we indicate with k in words of Anglo-Saxon origin such as kill or king. Due to French influence, we have retained this value for the letter c in words of Latin origin such as clear or castle, but we pronounce it as [s] when
followed by e or i. What the Romans never did was to use the letter c to represent an s-sound, so that we pronounce several words that come from Latin in a way that would have surprised the Romans. For example, we say the word cell with an initial s-sound although it is in fact the English version of the Latin word cella ‘room’ which was pronounced with an initial [k]. It is the same with Latin names like Cicero (which the Romans pronounced approximately kickerow), Caesar and Cecilia. In other contexts, the modern pronunciation of Latin in Britain and northern Europe respects the ancient norms and uses the k-sound in all words that are spelled with a c."