LONDON (Reuters) – The race to succeed Boris Johnson as British prime minister has begun, with 11 candidates so far putting themselves forward for a contest which will ultimately be decided by around 200,000 Conservative Party members. Below is what the bookmakers’ top three favourites have said on key issues: RISHI SUNAK – Current favourite On tax: As finance minister, Sunak set Britain on course to have its biggest tax burden since the 1950s. In his campaign launch video he said: “The decisions we make today will decide whether the next generation of British people will also have the chance …