Many street names east of Greenwich relate to the Durham coal field. Col. Braddyll was one of the partners in the South Hetton Coal Company. Messrs Braddyll & Co. also then owned Dalden-le-Dale Colliery.

The locomotive ’Bradyll’ still exists and is believed to be the oldest surviving locomotive with six-driving wheels. Bradyll was built by Timothy Hackworth at his Soho Works in Shildon, County Durham in 1840. The locomotive can be seen in the National Railway Museum’s location at Shildon.

The street was labelled ’Braddyle Street’ on the Stanford 1860s map and its alignment followed the modern Thornley Place before it was later extended south.

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Main source:	Greenwich Peninsula History – The history of the Greenwich Peninsula in south east London
	Further citations and sources