One of the most noticeable things you can do is wear an England Football shirt. Be it with your favourite team or player, people around you will surely know who you will root for, without you even having to make any effort. An England Football shirt is an excellent statement piece for any football fan, especially when they can also be customised to your liking.
https://www.quora.com/profile/Tiffany-Long-269/Wear-Your-England-Football-Shirt-Proudly-Without-Overdoing-It-England-is-the-kind-of-place-where-no-matter-who-you-sto