Why cannons are being used as street bollards in Plymouth There are numerous cannons of different ages, sizes and from different nations all over Plymouth - how many have you spotted? Updated The video will auto-play soon8Cancel Play now Get the latest nostalgia features and photo stories straight to your inboxInvalid EmailSomething went wrong, please try again later. Subscribe When you subscribe we will use the information you provide to send you these newsletters. Sometimes they’ll include recommendations for other related newsletters or services we offer. OurPrivacy Noticeexplains more about how we use your data, and your rights. You can unsubscribe at any time.