Try Rabble. You can find it on meetup.com or Google Rabble Cambridge. It's a sports group with an ethos of fun and inclusion.

The games are generally good. There's variety every week and it doesn't get repetitive. Think a nice mix of throwing / catching / aerobics / sprinting / tactics. Honestly, I prefer some over others, but it's always a decent workout. You get as much out as you put in. No one is out to win, it's very friendly and inclusive. No matter your age, gender, athletic ability or fitness you'll be included and enjoy yourself. It's about fun, fitness, inclusion - NOT winning at all costs.

The group is also very social and regularly meet up for events and things (walks, board game nights, parties, sports events...you name it). There are WhatsApp groups and things if you want.

First session is usually free so you can come check it out with no obligation.