Chaka Khan may be the star attraction at this year’s Love Supreme, but festival veterans looking to get the party started sooner know exactly who to look for. Natalie Williams’ Soul Family have been regulars at Glynde for more than a decade, and will once again be bookending the festival – opening proceedings on the Saturday and rounding them off on Sunday with an epic three hour set. It’s fair to say organisers love the 10-piece family affair – and luckily the feeling is mutual. “It’s just such a brilliant festival,” says Natalie, back in the UK following a whirlwind tour with Goldie. “We wil…