Ashurst energy partner Anthony Patten is leaving the firm to join the Perth office of Australia's Allens Arthur Robinson.

The move means a return to Australia for Patten, who is a partner in Ashurst's City headquarters, having started his career in Allens' Melbourne office.

Patten joined Ashurst in London in 2006, making partner in 2008. Directly before joining Ashurst he was senior in-house counsel for Shell Gas and Power, based in London and Dubai.