A horrified mum says she found her three-year-old son walking alone and soaked wet through after he was allowed to walk out of his nursery.
Ellen Imeson spotted little Lenny standing by a fence as she went to collect him from St Mathew's CE Primary School in Bradford.
Staff had no idea he had gone - and the mum was instantly 'panicked' when she recognised it was her son, YorkshireLive report.
