The government has published a consultation paper setting out their proposals to introduce a system for preserving (post-1858) will documents in digital form. However, there may be drawbacks... 

Here is the link to the proposal from the Government - https://www.gov.uk/government/news/easier-access-to-historic-wills-under-new-government-plans and another link to the consultation documents - https://www.gov.uk/government/consultations/storage-and-retention-of-original-will-documents

However, things are never as straightforward as they may seem!  Have a look at this video by Dave Annal who explains some of the pitfalls - https://www.youtube.com/watch?v=aPq_v66YWQI