I would think business casual, but not suit-&-tie ....

for hospitality at Allianz Park.

It's a nice ground, bucolic setting and, if you're on your own getting there, make sure you give yourself adequate time. Saracens' website tells you various Club-run shuttle options from the closest, but not particularly nearby, Tube and train stations.

And you probably know this, but, just in case, Saracens are the reigning European champions and again are atop the Premiership. I also think their most recent loss to Bath was partly down to the number of players away on England duty the same weekend for Autumn Internationals.

Enjoy!