Fridge or cupboard?

[TheyreMadITellYouMaaaad]

I always store ketchup, HP, salad cream, mustards and mayo (Helmans) in the fridge, but I'm tight on space and wonder whether I really need to.

Could I keep them in the cupboard? We go through ketchup and mayo pretty quick, but the others can last for months.

[Magicalmrmistofeles]

Salad cream and mayo on the fridge. Ketchup, go and anything else in the cupboard.

I have absolutely no idea why, maybe something to do with the egg in Mayo?

[TheyreMadITellYouMaaaad]

In this heat, definitely mayo in fridge, It got left out - in the shade - after supper, and has gone a bit greasy/slimy.