Mr Knowles will give a talk on antiques at the historic hall and will offer a valuation service on items visitors bring with them on the day.
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The expert worked for an antique shipping firm in the 1970s before joining London auctioneers Bonhams in 1976 as a porter where he soon rose up the ranks to become head of the ceramic and then a director.
In the 1990s he became a regular on TV with appearances on Crimewatch UK, The Great Antiques Hunt and The Generation Game.
The event begins at 1.30pm on August 4, and tickets cost £10 each, with booking essential to guarantee entry.
For further information or to book a place call (01670) 841235 or e-mail
enquiries@kirkleyhall.co.ukAll proceeds will be put towards the development of the student facilities and activities at Northumberland College's campuses.
The full article contains 177 words and appears in News Post Leader newspaper.