"Mummy's" is not a plural, should be "Mummies"
Otherwise, good, and I loved the rugby group. I was misdirected towards American Football teams, I missed that Tigers are not one!

The Tom Cruise group lets this grid down: there is an inaccuracy (as noted by JP), plus it feels far too specific to be achievable as a connection. Otherwise some nice ideas. I look forward to seeing your future grids.

Jp, I am the creator of this grid and apprichate your feedback. I dont know who this other guy is commenting, but please dont be offended and I hope you carry on playing.

This comment exposes a flaw in this site where you can comment under any name, but I wish people wouldn't use it like this.

Group 4 too specific (I put retailers which they are)
Good try. Don't let rude idiots put you off.