Stela Gildea, right, is one of eight Lambeth parents challenging Liberal-Democrat and Conservative councillors in the borough in next week's local government elections.
The parents want more local secondary places. Mrs Gildea, who has four children in a Lambeth primary, is standing against two Conservative councillors in Norwood. She said: "The last straw was the advert on buses that says 'Welcome to Lambeth'. What a joke! If you're between 11 and 18, you're not welcome." Thursday's elections decide the political composition of 88 English education authorities. All seats are up for grabs in London's 32 boroughs.