A group of travellers have moved in to a car park at the Vanwall Business Park.
Caravans were spotted in Vanwall Road yesterday morning.
Thames Valley Police and the Royal Borough have been informed.
A spokesman for TVP said there have been no arrests and no criminal offences and added: "We are liaising with those on the site, the landowner and community."
The Royal Borough said it is working with the police.
UPDATE Wednesday, November 23, 3pm:
A spokesman for the Royal Borough confirmed the travellers moved to Maidenhead Office Park in Westacott Way yesterday.
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The crash, which took place at about 7am today (Thursday), involved three vehicles. One man sadly died as a result of the collision and his next of kin have been informed.