@purplecorkheart
It looks like a straight forward enough style. I would see if I could get a pattern online and ask around for a good knitter (nearest wool shop may now of someone or knitting group in library ) maybe able to help.
Great idea, but please be aware that if a knitter charged for their time, as well as materials, this jumper would cost considerably more than £185. A knitter may do it for the fun of it, but handknit garments are massively undervalued due to the low cost of mass produced items.