Re the feminist tube map (Letters, 7 March), St John’s Wood station could celebrate a remarkable forgotten heroine of our modern lives, the electrical pioneer Dame Caroline Haslett. Born of humble origins near Crawley in 1895, Caroline kickstarted the Electrical Association for Women. In the 1920s she wired her St John’s Wood home and designed a square kettle and saucepan that she could use together on a single hotplate. She was also the only female member of a committee that came up with the BS 1363 safety standard in 1947: this covers the three-pin fused plugs and shuttered sockets that we still use in Britain today.
Dave Hathaway
Three Bridges, West Sussex
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