* FTSE 100 up 0.6%, FTSE 250 down 0.1%
Sept 9 (Reuters) - London’s FTSE 100 edged higher on Wednesday as Brexit fears led the pound to a six-week low, while AstraZeneca tumbled after suspending trials for its leading COVID-19 vaccine.
AstraZeneca Plc fell 0.7% after saying an unexplained illness in a study participant had led it to pause global trials, including large late-stage trials, of its experimental coronavirus vaccine.
The blue-chip FTSE 100 was up 0.6% with GlaxoSmithKline and Unilever among the biggest boosts. The mid-cap FTSE 250 lost 0.1%.
In Brexit news, the government will to set out new details of its divorce with the European Union on Wednesday, which a government minister acknowledged would break international law in a “limited way” and which could sour trade talks.
(Reporting by Shashank Nayar in Bengaluru; Editing by Subhranshu Sahu)