Looking for any groups or folks interested or already active in the Brampton/Georgetown/Milton/Oakville area, I'm keen to get involved in some casual play in the area but don't really know of any groups that are doing it regularly in my corner of the GTA.

There are two groups on facebook you may be interested in.

This group is probably the most heavily populated posting weekly get togethers and tournaments in the GTA.
https://www.facebook.com/groups/XwingToronto/

This group is a little further out focusing on Guelp/Waterloo etc, area.
https://www.facebook.com/groups/512079832215234/

There is a lot going on all around you. Join the Facebook group in my signature, listed at the top is a stickied post of all the tournaments and casual play nights in the GTA. If none of those suit you, it is a great place to connect with other local players.

Precisely what I was looking for! Thank you both for the info.