From the announcement:
The British Library holds one of the most significant collections of manuscripts written in Middle English. Thanks to a very generous grant by The American Trust for the British Library, we have recently been able to digitize a sizeable number of them, the first batch of which can now be viewed on our Digitised Manuscripts site. They range from copies of the works of Geoffrey Chaucer to William Langland’s Piers Plowman, and from texts relating to veterinary medicine to the Chronicle of London. We hope that our readers enjoy exploring them online; there are more to come, so keep an eye on this Blog and on our Twitter feed (@BLMedieval) for further announcements.