Please see the following statement from the Department for Work and Pensions

As many of you will already be aware, face-to-face assessments have been suspended due to Covid-19. Please find the link to the government announcement here: www.gov.uk/government/news/face-to-face-health-assessments-for-benefits-suspended-amid-coronavirus-outbreak

Please be assured that we are working at pace with our Assessment Providers to put in place alternative arrangements, which will likely involve telephony or paper-based assessments.  

We continue to accept new claims to all benefits and for existing claimants. Benefits will remain in payment while these alternative arrangements are put in place.