We used to have Persian Colourpoints and their fur was a nightmare. I'd never have another long haired cat, tbh. All you can do is groom as often as possible and try and put aside some pennies for an annual professional groom (which I didn't even know was a thing until recently!)
You could try a Furminator, too. It's not cheap but it seems kinder than any other tool we've used. If you do get one, make sure you get the correct one for the right animals and size and fur length, as there are loads. www.amazon.co.uk/FURminator-Long-Hair-DeShedding-Large/dp/B004WJ0L3Q/ref=sr_1_1?s=pet-supplies&ie=UTF8&qid=1486231850&sr=1-1&keywords=furminator+cat&tag=gransnetforum-21
British style conquers on this occasion.



