The name "Heritage Games" is generic enough that it appears multiple publishers have used this name. The games under this entry (currently) appear to be from several different companies with the same name.
For the Famous Dick Turpin game and Monarchs of England (2008 version) it is the same company as evidenced by the matching logos on the boxes, and a list of the company's games on a card in the deck of the Monarchs game. An image of the card is included below. The company's formal name is Heritage Playing Card Company, and is based in the UK. Heritage has used various versions of its name over the years, with the apparent intent to establish "Heritage Games" as the brand for most of their product line today. They mainly publish themed playing card deck games. The box and credits for the Monarchs of England list Trioview as the copyright holder of the game and illustrations, which appears to be an affiliated company.