LONDON: The mother of a British man charged over a protest against an Israeli weapons firm has voiced outrage over the expected 21-month imprisonment of her son before his trial, The Guardian reported.

William Plastow, a 34-year-old resident of Manchester, is accused of taking part in a Palestine Action demonstration against a factory in Bristol owned by Elbit Systems.

The protest, which took place in August last year, involved 17 others. The group has been dubbed the “Filton 18.”

Plastow, a script editor, has denied charges of criminal damage, violent disorder and aggravated burglary relating to the demonstration.

Six of the 18, including Plastow, who are all being held in prison, have been given a trial date of April next year.