Registration to umpire, officiate or volunteer at the 2025 London Grand Slam is now OPEN! There has been great interest in this event since the announcement, and with a high number of teams entered, we're on the lookout for a great team of people to help deliver the event. Whether you've been to our events before or new to the indoor hockey scene, sign up and get involved. We're one of the only events in England where you can complete initial indoor hockey umpire training, and be assessed for Level 1 and Level 2 awards! To sign up for the event, complete the form below. As this event is split between 2 weekends, we will be looking to appoint one team of people to the first Sunday and a team of people to the second weekend. Appointments for the event will be published by Friday 19 September 2025 and will be available to view by clicking here Please note, as the first day is a standalone activity, overnight accommodation is not automatically provided. If you require a hotel, the night before, please let us know when completing the form. For the second weekend, accommodation will be arranged for the Friday and Saturday nights.