A group of travellers have moved onto land in Harvest Hill Road in Maidenhead.
Caravans were seen by the junction with Manor Lane and by Kimber's Lane today.
It has not yet been confirmed if it is the same group which moved into the Vanwall Business Park and Maidenhead Office Park earlier this week.
Thames Valley Police has been contacted for more information.
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The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.