Yes, you are allowed to bring a bag into Hyde Park Winter Wonderland in London, but there are strict security protocols and size restrictions that you must follow. All bags are subject to a thorough search at the entrance, and large suitcases or oversized rucksacks are generally prohibited for safety and crowd control reasons. Most guests bring a small to medium-sized backpack or a crossbody bag to carry essentials like scarves, gloves, and external batteries. It is important to note that there are no official cloakrooms or luggage storage facilities inside the event, so you must be prepared to carry your bag with you throughout the entire duration of your visit. If you are traveling with large luggage, you should use a third-party luggage storage service (like Stasher or Bounce) at nearby Victoria or Marylebone stations before heading to the park. Additionally, be aware that you are not allowed to bring your own alcohol or glass containers into the event. Carrying a smaller, lightweight bag will make navigating the crowded markets and boarding the rides much more comfortable, especially during the busy evening and weekend slots.