Wilko's do a cherry wine kit I got one in the sale.
The ingredients interestingly have quite a high proportion of elderberry concentrate.
It will be interesting how it turns out.:)
Can't help with the wine kits, but I make a cherry WOW variant and it's amazing.
The recipe I use is:
1 litre red grape juice
1 litre cherry juice
800 grams sugar
1 cup of strong black tea or tannin
Pectolase
Yeast
Yeast nutrient
Top up with water to 4.5 litres.
Makes a really nice cherry wine and it only costs about 65p a bottle! I've currently got 12 bottles of it on the go.