Aahahah ... Yeah, a trolley is exactly what you would call a tram in British English.

I can tell you so many stories like that. For example, in the US 20 pronounced as "twony". It is easier to say than "twenty" if you think about it. So once I had to call to England and told a hotel clerk "the room twony five". It took me a couple of repeats until I realized that I am not talking to an American. )))

As they say England and the United States - two countries separated by a common language. )))