London Mayoral elections

The BBC does know there are ten candidates for London Mayor as may be seen on their own web site, read here. So why did they only invite three to their Tuesday evening BBC 1 TV debate? More here. The BBC are also aware that first and second choice votes can be crucial, the first link above ends as follows: If none of the mayoral candidates gets more than 50% of votes at the first count, all but the top two candidates are knocked out and their second preference votes shared out. Their deposits are refunded if they get 5% of first-choice votes. Several candidates are also standing for a seat on the London Assembly, made up of 14 constituency members and 11 on the London-wide "top up" list - elected by proportional representation. So it would be perfectly feasible to cast a protest vote for one of the seven smaller party candidates but back that up with a second choice major party candidate if convinced that only politicians from the corrupt establishment are capable of governance. BUT most Londoners I speak too are unaware there are more than three candidates AND that must be as a result of the conspiracy of silence by the BBC and most of the remaining mainstream media! As I said this is outrageous!