A couple of things I use when trying to work out who's employing come from reading Flight International's employment section.
I look for ads calling for ground engineers.
I also look for ads calling for sim instructors/TRI/TREs.
If the airline is expanding, they'll need all of them.
Now, specifically for the low houred guys. Do a lot of research on past hiring practices. Have they ever hired low houred guys and from where? Their own scheme or not. If not, good.
The UK CAA specifies a ratio of low houred (ie inexperienced) to experienced pilots. So, if you see an airline that has hired low houred guys previously (ie a few years ago) hiring experienced guys, get your CV in. They will eventually get to you.
If on the other hand, the airline's been hoovering up low houred guys already and you haven't got your CV in, it's possibly too late. (Unless it's a pay to train sort of deal.
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Never turn down a flying opportunity. It is much easier to get another flying job if you already have one. Contacts are vital.