England’s climate is often credited to the Gulf Stream, a warm current that flows from the Gulf of Mexico to Europe. However, this belief is nothing more than an urban legend. While the Gulf Stream does warm the atmosphere, it does not account for the mild winters experienced in England. The real reason behind Europe’s mild winters lies in the absorption and release of heat by the ocean, the moderating effect it has on maritime climates, and the atmospheric flow caused by the conservation of angular momentum. So, contrary to popular belief, the Gulf Stream is not responsible for Europe’s mild winters.
https://www.americanscientist.org/article/the-source-of-europes-mild-climate