We have received the following statement from the archives:

In response to concerns about the Covid-19 virus, Lambeth Archives will be closing at 3.00 p.m. tomorrow, Friday 20^th March.
We will continue to monitor emails and, where possible answer enquiries. However this will be limited by the fact that staff will be working from home without access to the collections.
At the moment we do not know when the public service will reopen, but we will keep you advised.

The Minet Library, in the same building as the archives is also closing, so that the whole building will close.