Hi
Surveying objects for OpenStreetMap is fine, if you are there and capture a GPS trace, that is the gold standard and you should use that in OSM.
We can also use out of copyright OSM maps, which are available as leyers in josm.
What we cannot do is use premium OS maps as these are not opendata and your usage is only licenced for personal use, which mapping in OSM is not.

Hope this helps.

Cheers Phil