There is a difference of opinions as to when an Easter Vigil should be held. Some consider it should be held after dusk (20:12 BST in London; 20:41 BST in Glasgow) on Holy Saturday, whilst other hold is should be at dawn on Easter Day (05:45 BST in London; 05:48 BST in Glasgow). This year with the Easter being one day of the latest it can possibly be means either a late start or early rises (as the times I have given for London and Glasgow show).
One option which occurs in the Southwark Diocese is the Cathedral has the Easter Vigil and lighting of the new fire on the Saturday evening incorporating Baptism and Confirmation into the service. Many churches incorporate baptism into their Easter Vigil service. However at Southwark the Confirmation at the Easter Vigil is not part of a Eucharist service, with the newly confirmed being able to make their first communion following confirmation at their own parish church on Easter Day – which may also have a dawn Easter Vigil.
At St Mary’s Cathedral in Glasgow, after many years of the Vigil and lighting of the New Fire taking place on the Saturday evening, this has now moved to dawn on Easter Day. One tradition that started a few years ago was subsequently using the remnants of the New Fire to kindle a barbecue upon which bacon and sausages were cooked for the servers, clergy and congregation who had attend the Vigil. See pictures from 2010 I saw it was wet in Glasgow so I do not know if this continued, or will do this year.