For its size, Northampton has a good range of restaurants to suit any budget.
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Budget
Academy Coffee Haus (http://www.restaurant-gui...) offers cheap meals from around £7 a head.
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Midrange
The Fox and Hounds pub (http://www.restaurant-gui...) in Harlestone offers good pub fare at a reasonable price of around £18 a head.
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Top end
The New French Partridge (http://www.restaurant-gui...) offers fine, French styled cuisine for around £54 a head.