
My mum has mild dementia (diagnosed vascular dementia, but with some added pre existing anxiety issues that complicate things and exacerbate her illness), but having been a lifelong dog lover, my dogs are a huge bonus in her life, not to mention stress reliever for both of us! It is hard work being a full time carer for someone with such an illness, I couldn't do it without my dogs. Even though their life is not ideal at the moment (can't leave mother on her own to walk them as much as I would like).
dogpages.org.uk
and
dogrescueworld.org.uk
for listings of rescues all over the UK.
Please update if you do find one, I am always in awe how dogs help people so much. For every registered PAT of Therapy/assistance dog there is probably 50 more in private homes doing sterling work just being there and asking for a tummy rub now and then.