Arsenal lead Spurs 3-1 in the London derby

Arsenal's Per Mertesacker celebrates scoring his side's first goal. Credit: Dominic Lipinski/PA Wire/Press Association Images

Arsenal lead Tottenham 3-1 in the London derby at half time despite Emmanuel Adebayor scoring against his old club before being sent off.

Arsenal goalkeeper Wojciech Szczesny made his first start in two months, Jack Wilshere returned from suspension and Theo Walcott started.