Please note that the track league moves from Friday evenings to Wednesday evenings starting with the Open Meeting on Wednesday July 18th (up until 29-Aug and then back to Fridays for 7-Sep & 14-Sep). On line entries for the Open Meeting get a discounted price so get your entries in now.
https://www.britishcycling.org.uk/events/details/175654/Welwyn-Track-Open-Meeting