Apple leaf curl aphid problem

in Fruit & veg
Hi! I have an espalier Bramley apple tree and it’s leaves are curling with what I think is an aphid attack It’s really quite bad! I have had a closer look this morning and have found ladybird lava on the leaves I like to be as organic as possible but don’t want to loose my fruit What is the best form of action for this Please help!
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I will go out and give it a go What dilution did you use please?
Thanks in advance
Spray bottle at the ready! 🙂