I've got the capilene underwear, the fleeces, the -10C walking shoes and thick socks, arcteryx hat, the lined shells (jacket AND trousers), and gloves and I only have to venture outside, with my husband pushing me in the wheelchair, for about ten minutes and I'm already freezing cold.

And it's way above freezing in London right now.

Everything I know about keeping yourself warm whilst being moderately active obviously doesn't apply here.

Does anyone have any tips or suggestions?

I never would have guessed this would present such a problem and its the main drag about using a chair.

Thanks!