According to the Political Editor at The Sun, UK PM Boris Johnson is not preparing to announce any further Covid-19 restrictions this Monday. Johnson is at present hosting a meeting with his Cabinet. He is under pressure from scientific advisors to tighten restrictions with immediate effect, though there is significant political pushback against further measures from within the Cabinet and Conservative Party.
However, a journalist at the UK's Daily Mirror recent tweeted that the UK PM is considering a return to "Step Two" measures from 27 December.
GBP hasn't seen much of a reaction given that there was already plenty of speculation about further restrictions swirling.