Resources for Parkinson sufferers

Hi - I am looking for a number of recommended links or/and stores in the UK (London) that sell aids for Parkinsons. Obviously there are sites that cater for movement disabilities and aids for some of the symptoms of Parkinsons, but I was wondering if anyone knew of specific sites that catered specifically for this disease.

I don't expect much more than 'Google it' but if anyone has any particularly good recommendations this would be appreciated..