I am looking for some free or low price activities to do this summer with 2 teenagers (14 &17 yo). We normally go abroad but we can't this year. I would really appreciate ideas that we can do in London (zoo, funfairs, waterparks, themeparks, trampolining) I don't know, I welcome any ideas that might look appealing for that age (they are not too much into museums). We hardly have any budget so I am thinking of voucher codes, deals, offers, discounts. I would really love to hear from other mums, we don't even have a group of friends that join for activities like we used to when they were babies, so feeling quite isolated lately.