Other way I reckon- approval of the Oxford vaccine in the next week or so, and a colossal effort involving the army, mobile centres etc etc to get as many done as quickly as possible.
To me it's inconceivable we're the only country that has the 'new strain'. Just seen a fairly convincing scientist interviewed who suggested that we're the among world leaders (only Denmark ahead) in identifying genomes so it's quite likely we've simply identified it...