re English Oral.
Until ~2014 there was an controlled assessment in English Language called 'Speaking & Listening' which was worth 20% of the final grade.
As far as I understand there was some issue regarding how well pupils did in this compared to what they then showed they could do in their written work.
So in 2014 it was dropped from the course, with little notice, after many schools had already spent quite a lot of time preparing. Instead, the pupils got a grade 1-5 (I think 5 was the highest), alongside their English Language result.
(My DD1 did her GCSEs in 2015. She was really impacted by this change as the exams turned into 60% instead of only 40%. She was great at S&L and CA, but hopeless at the actual exams),