The older part of the village, IIRC. It's probably just "Littleworth", but that needs on the ground confirmation (possible even "ask a local") #SurveyMe

There's a Littleworth Road to the NE, but the convention round'ere is that roads *to* places are named *for the place they go to* - and isn't that Littleworth Road, Wheatley? Hm.

Anyways, the Cricketer's Arms pub (which has shut, sadly), gave its address out as "38 Littleworth" when it was in business, and that address can still be found on CAMRA sites  and other publications. 

That style of "<number> <village>" addressing seems common for this area in the historical archives too: https://www.wheatleyarchive.org.uk/archive_search.php?view=1827&go=52&map=either (scroll down)
(although these records are from like 1911)

... Conversely, NaPTAN thinks it's called "Littleworth Road" even at this point

https://bustimes.org/stops/340000505BC
= https://www.openstreetmap.org/node/533870807

https://bustimes.org/stops/340000505OBC
= https://www.openstreetmap.org/node/533870809

but tbh I always find the naptan:* names to be a bit crap: quite often the stop names themselves have something different on the ground.

Could just be a call for addr:place=Littleworth for the older main street, like Elsfield and Woodeaton. Although they've evidently used street numbers for ages on this road.