Help identifing a signals trade badge needed

[Shiny]

Hi all,

I've just picked up this cloth badge at a fair, the dealer told me it was a signallers trade badge but couldn't explain exactly what when I asked about the crossed flags.

A different dealer had a bronze pin badge in the same design and said it was Australian.

A third dealer said this was worn by Royal Engineers of the Signals Service before the crossed flags were introduced.

Can anyone help explain the badge please?

Thanks a lot,

Michael