According to a BBC survey, a 45% drop over c20 years in the number of language GCSEs taken, with a bigger drop in French, though more taking Spanish.
Apparently because they are perceived as more difficult.
I rejoice in not being the typical Brit or American abroad expecting everyone to speak English. Should we not be more encouraging, perhaps by allowing universities if they wish to insist on one language GCSE alongside English Language and Maths as a condition of entry?