Gardening boots for impossible feet?

I have no personal experience to share, but have seen catalogues for this company on a stand outside the podiatry department at the local community hospital.

www.cosyfeet.com/

Ps there is 20% off at the moment.

These come in various widths, Fenbug
www.widerfitshoes.co.uk/womens-wide-fit-walking-boots

I have bought boots from them and they are long-lasting.

Otherwise, could you find some with velcro fastenings so if your feet do shrink you can tighten them and perhaps put in an insole?

Thank you so much, everyone, for the suggestions, I've followed them up. Unfortunately Skechers don't go beyond an 8, ditto Siebels whose designs I love but no way will they go round my paddles. Because of my wonky ankle they have to be properly supportive shoes/boots, and in any case clogs rarely fit over my high insteps. @fancythat, Mountain Warehouse was a great suggestion, and for anyone else interested, Cotswold Outdoors also have possibilities but .... I can't afford to spend £100-50 plus on what will be mainly gardening shoes! Also, I know that if I can get up the mileage my feet will shrink, so not sure I can justify spending that sort of money on footwear that could be obsolete in 6 months time? I'll try the local agricultural supply place, they used to do clothing etc, and maybe Screwfix (don't laugh) if they'll let me try on first, but my local branch are pretty clueless - about screw sizes, anyway (that's another story ...)

Have you tried Bogs? They are popular here in BC, and I see some are available at Welly Warehouse in UK. They tend to be rubber bottoms with neoprene upper for a bit of stretch.

I wear a pair of mens size 6 workmans leather and goretex boots which I bought in a builder supplies place about 30 years ago. I used to wear them hill walking, now just for gardening. They are blissfully comfortable and supportive.

I use clogs - they are very wide

Sketchers?
A farmer's outlet?
Mountain Warehouse?

They may be rubbish suggestions. Or they may not be.

I feel your pain. I also have problem feet and finding decent footwear is a minefield.