Hi there, thedaffodils
As usual, as a Brit and mentor, but not a teacher:
"Westminster" is the area of London that includes the 2 Houses of the UK Parliament, i.e. the seat of the UK's Government.
"Religious beliefs" - would it help if you read it as "Religious principles", where "principles" would similarly be used in the plural.
Hope this helps.
PS Sorry, I missed the point about the word "couple"