Best to mix the wine, Hudnott’s and fruit in an airtight container and leave overnight, preferably in the fridge.
Half fill a 2 litre jug with ice, add the wine/Hudnott’s/fruit concoction. Add fruit juice and tonic water just before serving.
Why not try other Hudnott’s varieties? Hudnott’s Lemon Gin Spirit Drink works very well in this concoction too!