British Summertime by Paul Cornell

[samvara]

Many fine qualities; a classic time travel novel that kinda hopped between the many worlds theory and the one time-line theory.

Alison Parmeter works for a betting shop setting the ratios because she can read anything; body language; expressions; where to find chip shops. She doesn't have the easiest life as the avalanche of information frequently forces her to withdraw and hide from the world. When she starts lowering the odds on "End of the World" it's time to get serious.