Certain designs of UK extension strips are small/'not tall' enough to allow a plug to be inserted upside down with only the earth pin in, opening the shutters w

Certain designs of UK extension strips are small/'not tall' enough to allow a plug to be inserted upside down with only the earth pin in, opening the shutters without anything blocking them. This is a potential safety hazard when you consider this is something children might do without knowing the danger. This type of design is technically not to spec but widely sold eg by IKEA. A recessed design means this isn't possible so is safer as this type of misspecification isn't possible.