Budget up to £80-£100, i work in a shop in the warehouse. basically a skivvy but none stop on my feet. Dress shoes i were atm just kill, I alway do alot of walking with the dog so something decent to suit that too.
If you work in a warehouse, you should really be wearing steel-toe-cap boots. As these are Personal Protective Equipment, your employer should provide them free of charge or reimburse you for the cost of buying them. They can't get out of it, as it is the law.