Trivia

• London-centric World Map

• Economic Trivia (Black Wednesday 16-Sep-1992)

• Point Ruler Free printable ruler in printer's points for graphic design

• Successful Invasions of Britain since 1066.

• London Travel Modes and Capacities

• Squares (hard)

• Squares (easy)

• Here are some technical puzzles in stochastic analysis and martingale theory.

• My only broadcast bad joke was aired on BBC Radio 4.