Have you looked at ARNI (Action for rehabilitation from neurological conditions). They have trainers throughout the country that will come to you. Not free but not too expensive. Or they do DVD and a brilliant book called The Successful Stroke Survivor by Tom Balchin. He's the Director at ARNI and he's also a stroke survivor.
Hi, I'm 4 years post stroke and had an Arni physio for about six months at the beginning of my rehab. Unfortunately I didn't get on with their method of training. I know of a couple of other Stroke survivors who also had the same experience.
I found that their main object is to sell you books, dvds or other pieces of equipment. I personally preferred to work with my qualified neuro physiotherapist.
It's worth giving it a try ( they are half the cost of a Neuro Physiotherapist).
I know how you feel it's disgraceful. I had 7 weeks NHS physiotherapy after my stroke 4 years ago and we have had an to pay for everything since then (we've spent about £19,000) thanks to the generosity of our brilliant family and friends. There are lots of amazing therapies out there if you are lucky enough to be able to afford them.