• I reported a large White Conway truck ...
    Only got a partial plate as it was dirty. ...

    Does anyone know where I can find extra info from the plate number (L058 NKE)? ...

    I recommend going to a car valuer or car insurance website while it is still fresh in your memory. Try out a few different lettering combinations if you are unsure and you'll have a chance to clarify the license plate before you proceed with reporting.
    For example, it seems Teaforme got mixed up on number '0' and letter 'o'.
    http://www.webuyanycar.com/vehicle-confirmation.aspx?reg=LO58NKE&cm=1

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