Complex sentence: I am aware this may create a potential confict of interest when I edit pages relating to them, but I will make sure I will disclose this every time I make an edit to a page that relates to Nationwide Building Society.
Split into simpler sentences: I am aware this may create a potential when I edit pages relating to them. However, I will make sure I will disclose this every time I make an edit to a page that relates to Nationwide Building Society.