Dance: Sadler's Wells comes alive with forest spirits, but elsewhere it's hard to see the wood for the trees, says Jann Parry

Shy as a child, Siobhan Davies became an art student but found she fitted in better at dance classes. Her innovative, improvisational style lifted her to the heart of the nascent modern dance scene, and for 30 years she has remained one of its guiding lights. Her latest piece, based on bird song, tours in October, while a new dance centre is set to open next year.