Hi,
Just received an update from UKVI support to await and check for the latest updates on a gov.uk website: https://www.gov.uk/ with regards to visa vignette expiration.
Still awaiting for response from CIH@homeoffice.gov.uk.
Thanks,
Senthil

Hi,
Same situation here, even my visa vignette expiration date is on 24th April,2020. Still awaiting for an response from CIH@homeoffice.gov.uk
Thanks.