From the BL’s Asian and Africa Studies Blog:
The British Library’s oldest Qur’ān manuscript, Or.2165, dating from the eighth century, has now been fully digitised and is available on the British Library’s Digitised Manuscripts site. Among the most ancient copies of the Qurʼān, it comprises 121 folios containing over two-thirds of the complete text and is one of the largest of known fragments of an early Qurʼān written in the māʼil script.
This manuscript was purchased by the British Museum in 1879 from the Reverend Greville John Chester (1830-1892) as noted on a fly leaf at the back of the manuscript. Chester was an ordained clergyman interested in archaeology, Egyptology and natural history and made numerous trips to Egypt and the Near East, where he acquired objects and manuscripts, which are now in the collections of major UK cultural and library institutions. It is very likely he acquired this Qur’ān when he was in Egypt.