The following text is from the original listed building designation:
The following entry:- PONTOISE CLOSE 5280 0/1148 Granite Column in rear garden of No 5 II shall be amended to read:- TQ5155/25 PONTOISE CLOSE Granite Column in rear SP1148 garden of No 5 - 7.1.86 II
PONTOISE CLOSE 1. 5280 0/1148 Granite Column in rear garden of No 5 II 2. Probably later C19. Tall Doric column of red Cornish granite, now in rear garden to No 5 Pontoise Close, but originally in the grounds of Bradbourne Hall (demolished). The column formed the centrepiece of a Druidical circle, some of the remnants of which remain eg monoliths in gardens to Nos 6 and 8. Thought to have been fashioned and erected by order of the then owner, Francis Crawshay (1811-78), of the Crawshay family of Cyfarthfa Castle, Merthyr Tydfil; the Crawshays were amongst leading late C18 and early C19 iron masters in South Wales, and owned iron tinplate works in the Merthyr Tydfil area. Francis Crawshay was a member of the Order of Druids of Wales, and is thought to have trected a Druidical Circle at Pontypridd, when he managed the family tinplate works at nearby Treforest.
Listing NGR: TQ5182556129

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.