This article is about the original B266 from Crystal Palace to Penge.
For the current B266 from South Norwood to Thornton Heath, see B266
The B266 was a short road through Crystal Palace Park in south London.
It started on the A212 Westwood Hill before heading roughly southeast along Crystal Palace Park Road. At the eastern end of the park it passed under two railway lines in quick succession, with Penge West station adjacent to the second line. It then continued southeast along what is now Penge High Street to end on the A213. The A234 was the road on the other side of the crossroads.
The road was upgraded to Class I status in the early 1930s, becoming an extension of the A234, which it remains.