The A270 was a short link road to the north of Bexhill.
As it still does, the A269 enters Bexhill in a southeasterly direction. However, in the suburb of Sidley Green, it then bore to the right to reach the town centre. The extension of the original line was numbered A270. It continued southeastwards through Pebsham to end on the A259 at Glyne Gap, well on the way to Hastings.
The entire length of the A270 is now numbered A2036. Owing to the short length of the road it is not certain when this happened, although it was in the 1960s at the very earliest. One suggestion (although this is is now known to be incorrect) was that the A270 number was specifically taken for its current route in the 1990s: the A27Brighton bypass had been completed and an obvious number was needed for the pre-bypass road. However, whilst maps from the late 1960s still label the A270, by the 1976 OS 1:10,000 sheet the A2036 number has appeared, and sheets from a similar date still show the A27 number throughout what is now the A270.