Cockney Accent
It's very strange to speak English with British people. I've been learning American English and I've always heard it. and it was the first time that I had my first conversations in British English (recently)*. Some (British people/Londoners) have an accent that I can understand without difficulty but some others, especially with the Cockney accent, are very hard to understand, and you've got to concentrate to figure out what they mean. This trip to London was a great training before my summer vacation in the USA.
It conforts me to know that I can go abroad and have no problem/difficulty to understanding English speakers.
*You can't say "it and it" because each "it" refers to something different and so it doesn't make sense. It's best to turn the sentence into two different ones and leave out the second "it." For flow, it sounds better to have "recently" in there, but you could easily switch that out for another time indicator (ex: two days ago, when I went to London last year, etc.).
Cockney accent
It's very strange speaking english with British people. I've been learning American English and I've always been used to hearing it. Recently, was the first time that I had conversations in british english.
Some have an accent that I can understand without difficulty but some others, especially those with a Cockney accent are very hard to understand, and you've got to really concentrate to figure out what they're saying.
My trip to London was great training before my summer vacation in the USA.
It comforts me to know that I can go abroad without any difficulty and understand english speakers.
Good Work!
(Britain includes, Northern Ireland, Scotland, Wales and England. As such there is no "British" accent. There are regional accents. What you would have heard is a regional English accent).