Please be aware that Skiddle don't run the doors at the event so we’re unable to give you a definitive answer to this question.
Whether you'll require ID or not varies from event to event, so you'll need to check with the organisers. and/or venue. Your best bet is to check on Skiddle, the official event website or the event organisers Facebook.
If you’re still unsure then you can contact the organisers directly.
Note: If the event is for over 18s only, a passport, driver's license or provisional driver's license is the usual provision.