If you mean Westron is English, then no . . .
but if you mean Tolkien has, in theory, translated Westron with English, then yes!
In any case, we have
very few examples of actual Westron. Some linguists will count the somethings that appear in
drafts for Appendix F . . . but yet were not ultimately published in Appendix F however, for "whatever reason".
Anyway, a few examples from Appendix F.
Hobbitish Westron
kuduk English (invented English) "Hobbit"
Westron
banakil "Halfling"
And note the similarity between the word for "Halfling" and -- as a certain
kuduk was called in Westron -- Banazīr "Half-wise"
Or
Ban for short, for "Sam"