Parnaby's in Malton (on the main high street) will come out and fit saddles for you. They are coming out to me soon, they change £35 callout/fitting. They have a website, just google them.
There is also a guy in Norton in a little shop, can't recall his name but he does saddles and repairs, don't know if he does fitting though.
Can't help with a farrier, you could try Danny Elliott (google him) who is excellent but I don't know if he goes that way. Or ring Rainbow vets, they might recommend someone.
We have used and highly recommend Jason Richardson DipWCF - he lives in Malton and is really good.
We had a problem horse and he was really calm with it and handled it with no problems. Also very knowledgable and happy to offer advice.
He can be contacted on 07843 201130 or jason@jerfarrier.co.uk.