Where to buy wide fit trainers? Recommendations please

Hi guys

I need to buy some wide fit trainers for my dad.

Can anyone recommend somewhere I can go with him and buy wide fit trainers?

I found on Amazon but they didn't fit right.

So trying on before buying would be ideal. Budget around £80-£90 but I realise these trainers come with a big premium for some reason

Any advice is much appreciated
Cheers