Plas Brondanw (the house and gallery, but not the cafe and gardens) is run by the Susan Williams-Ellis Foundation. The charity was established after Susan's death to conserve her archive and ensure that her work and that of the wider family is available to the public. The other main aim of the charity is to promote the arts and offer opportunities for people to take part in creative activities. The trustees of the charity are Anwyl Cooper-Willis, Sian Cwper, Menna Angharad and Robin Llywelyn, who are Susan's children.
To find out more about the purpose of the charity and to see its governing document go to: register-of-charities.charitycommission.gov.uk/charity-search/-/charity-details/5044951/governing-document
Clough Williams-Ellis’s famous gardens, which are also an essential part of the Plas Brondanw site are run by the Clough Williams-Ellis Foundation, who are also responsible for the cafe. For more information about that charity, check out their website: plasbrondanw.com
Portmeirion village is run by a different organisation again, Portmeirion Ltd, their website can be seen here: portmeirion.wales
Portmeirion Pottery is an international company that now owns a number of other brands in the field of pottery and homewares. See their online store here: portmeirion.co.uk