in Winter) with no advance booking required. The centre is also used as a unique venue for live music and events, as well as being available for use as location for filming and training. The Friends of Williamson's Tunnels (FoWT) The Friends of Williamson's Tunnels (FoWT) is a registered charity, managed by a board of trustees and committed to exploring, excavating and preserving the tunnels, with the work of excavation carried out by volunteers. FoWT's main base on Mason Street is the site of Joseph Williamson's house, largely demolished except for a small section of the facade which remains standing. However, excavations there have uncovered an extensive portion of the site below ground level, as well as numerous tunnels branching off in various directions at different depths. Beneath the basement area is a large chamber known as the "Banqueting Hall", which gained its nickname from oft-repeated stories of Williamson holding lavish banquets for his most loyal friends, though it is highly unlikely the space was ever used for this purpose. As of 2019 the "Banqueting Hall" has been completely cleared of spoil, but excavations continue in newly discovered tunnels leading off from the main chamber. A second section of tunnels is accessed from the "Paddington" site, comprising a series of underground galleries on several levels, leading to a large vaulted chamber approximately high from floor to ceiling. The floor of this chamber is approximately below ground level and was cleared in 2016 after several years of excavation. The sites have been used as a filming location, and have appeared in several documentaries featuring the tunnels and FoWT volunteers. The group has been featured in several news items, including domestic TV channels like the BBC and ITV. Public access The general public can visit the "Paddington" site with free guided tours on Wednesdays and Sundays, while the Mason Street site can be accessed by FoWT members. Members can also go to regular historical talks and other events. In fiction In Series 13 of Doctor Who, entitled Doctor Who: Flux, the Williamson Tunnels, as well as Joseph Williamson and James Stonehouse, are featured. In the story, with digging set in the 1820s, Williamson seems to be aware of "the cataclysmic, the impossible" lying ahead, which in 2021 prove to be the unknown force the Flux, tearing through the universe, reducing everything it touches to nothing. Williamson appears several times throughout the series,