In recent years, the Octagon has specialized in producing great American drama, including works by Arthur Miller and Tennessee Williams.
The town council and the theatre management were officially advised that the Royal party would need no 'comfort facility', they installed a lavish loo with gold-plated fittings.
The building was designed by Geoffrey H. Brooks, Bolton's Director of Architecture, and was constructed for £95,000 using money raised by public donation.
This improved the theatre's seating systems and disability access, and allowed the construction of a new room for business hospitality, and a more spacious bar.
In 1999 a financial crisis threatened to force the Octagon to cease producing its own plays and become a receiving house for touring shows.
The 50th anniversary season included classic productions such as Jane Eyre (18 January-10 February 2018) and a Christmas Carol (17 November 2017- 13 January 2018).