Small to medium businesses need an "enormous amount of government support" so they can afford to help female staff members through maternity leave, said writer Liz Fraser.
Her call was echoed by beauty business owner, Rachel Carr, who wanted more legislation to "protect" businesses.
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Armed police have carried out a raid apparently linked to Wednesday's deadly terror attack in Westminster.
Cheryl Grimmer vanished from inside a beach shower block in Wollongong, Australia, in 1970, when she was just three.
Pc Keith Palmer was on the front line and because of his actions, the Westminster attacker was unable to kill anyone else.