Not sure if this has been mentioned but this announcement in 1983
”The Society has produced three new booklets in English for the special purpose of helping people of certain religious backgrounds. The booklet TheTime for True Submission to God (sm) is designed to help Muslims tounderstand the truth. ”
Incidentally , Britain has a certain Muslim population. In my time as a Witness we always enjoyed witnessing to them. They were respectful and listened. Never found any interest in our message though.