In the UK, there's possibly much more of a problem with low/status pay for engineers in general than for women engineers specifically.

Clever women with the right social background head for medicine, law, media, marketing, or even teaching - especially at department head level, and above. That's where the real money and status are. There's also not much of a gender gap to speak of, except perhaps at the very top.

If anything, the gap goes the other way now, because boys in state schools are being aggressively socialised by peer pressure and teacher disinterest away from academic achievement in ways that girls aren't.

Engineers often have poor social status anyway. The UK is run by public school types, and they tend think of engineers as a slightly better class of carpenter or plumber. Social polish and family/school connections are far more valuable than the ability to build stuff that works.