In this year like no other, follow news releases as they happen from Ofqual, DfE and the exam boards on Twitter, using this Examinations list. For Mathematics use this mini-list for AQA, Edexcel and OCR Maths & MEI Maths. (You can follow these lists without subscribing to Twitter.)
Use the following links for each exam boards’ provisional results statistics and grade boundaries.
OCR Results Statistics
FFT Education Datalab
check their blog for the latest information: …
A-Level results 2020: The main trends in grades and entries
Also note that all the latest figures are available to explore on Education Datalab’s results microsite.