The inquest opens today into the death of an exiled Russian oligarch found dead at his home in Ascot.
Boris Berezovsky was found in his bathroom last Saturday.
A post mortem examination carried out earlier this week found that his death was consistent with hanging.
Racegoers at Royal Ascot Ladies Day are likely to need their umbrellas as today's rain threatens to put a dampener on the event.
The Met Office has issued a yellow weather warning for London and the south east as the longest day of the year gets off to a wet start.
A thunderstorm is forecast for 2pm, when the Queen is due to travel to the racecourse in a horse-drawn carriage.