20 March 2018
HMRC service status: back to normal
HMRC restored live online filing after a 48-hour outage that hit CIS, VAT, and other services.
HMRC said the live service was restored after the longest break in online filing since new CIS in 2006: more than 48 hours, Monday morning to Tuesday afternoon, affecting PAYE, CIS, subcontractor verifications, VAT, and the rest of the online tax suite — including Gateway Solver.
If you had not filed in that window, there was nothing extra to do. If you had filed and had no confirmation, retry. If you saw an internal server error, retry as well.
CIS and VAT filing products remain current.