BigCloud E-liquid.co.uk E-Liquids, Flavour Concentrates, Mixing Kits,
Their site says "All of our E-liquids are ( Diacetyl Free ) 100% VG Available on most Custard & Toffee Eliquids"
I haven't tried them to be honest but they seem legit. I only vape 100% VG juice, but I don't vape custard...