If you’d gone looking for the Transgressive Records team on the last weekend of June, you’d have found them “swanning around underground, in hot tubs and in and out of costume” in a Somerset field.

Co-founder Tim Dellow’s slightly bizarre vignette makes sense when he reveals that all this was going on during a “cosmic” weekend down The Rabbit Hole, one of Glastonbury Festival’s most notorious hangouts. It was all part of the London-based indie label’s 15th birthday celebrations, which ...