P231 CEEFAX 231 Wed 27 Jan 21:10/10   N  My first is in RENT by not in LOAN My second is in DARBY but not in JOAN My third is in APPLE and also in PEAR My fourth is in FAR but not in NEAR My fifth is in SALMON but not in T NT My sixth is in CALL but not in SHODT My seventh is in GREEN and also in G DX My eighth is in BARN and also in HAY My ninth is in RABBIT and also in HARE My whole is the name of a London Square  What am I? press REVEAL for answer TRAFALGAR Thanks to Richard Mark Gall