A video created by the 'Take the Flour' back campaign explains what the group's members will protest against this afternoon:
The video claims:
"There has been no proper safety research for GM wheat. GM food can have unintended results. Plus, releasing anti-biotic anything into the wild is a bad idea."
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New 'smart ticketing' plans will also be introduced so travellers can receive automatic compensation payments for late trains.
The 41-year-old father of six died last Thursday - a week before he and the band had been due to begin touring in North America.
There will be heavy showers on Saturday though sunshine will be enjoyed by many across the UK before a similar outlook on Sunday.