The Library is closed onsite, open online. See updates here.
The British Library published its new statement of vision and purpose earlier today. It is called Living knowledge and contains the vision of where the library would like to be by 2023. You can read about the ideas.
There is a Living knowledge blog where you can keep up to date with what is happening with "strategy, key projects and future plans", and you can participate in the discussion via the #livingknowledge hashtag.
Have a look at Living knowledge.