Parent Alan Perks has raised £2,500 for a Didcot pre-school by visiting more than 200 London tube stations in just one day.
Mr Perks, 45, of Norreys Road, Didcot, raised the money for Park Pre-school, in Queensway, which his children Sam, four, and two-year-old Eloise attend.
The charity-run pre-school has been struggling for funding.
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