Question: “Can you please advise me on whether the bride sits on the left or right of the groom on the top table. I think it’s the left, but not everyone agrees.”
Traditionally the Bride will sit on the left side of the Groom.
Here’s one link I found that may help you out which also has a lot of other information about wedding seating arragnements.
http://www.perfecttableplan.com/html/hints.html#weddingtoptable
If you have more questions about Wedding Etiquette, check out WEDDING ETIQUETTE SECRETS REVEALED.