.... to need some help?

[ThePlotSickens]

I'm 69, on the outskirts of W London, although have freedom pass, can travel.
Multiple health problems and I can't see a way forward - feels all downhill now, including being told by GP that I have small vessel disease, which means an increased risk of vascular dementia.
I'm lost, never thought this would happen, but here I am.
Is there any counselling service that might help?
I'm taking Sertraline for depression, but I am not so much depressed as in despair.
Have any of you have had help with this sort of thing?
I wonder if the dementia is happening and I am aware of it subliminally.
Can someone help me?

Go back to your GP. Is the GP treating all your health issues? Ask for a referral to a specialist in dealing with depression ~ there are more treatments available than medicine. Ask for a proper investigation into your suspicion of dementia.
Not sure if you are on your own but also for details of various agencies giving advice and practical support.