Is the 1992 UK VHS of The Charge of the Light Brigade the longest version available?
https://www.imdb.com/title/tt0062790/alternateversions?ref_=tt_ql_trv_5
Yes, it would appear so. The 1997 MGM W/S LD, the DVDs and the UK TV broadcasts aired on different channels have been sourced from the shorter U.S. cut.