I've heard about that many many times yet I don't believe I've ever experienced it (I'm in the UK and in my late 40s).
I am a contractor and for the most part it's still, thankfully, a meritocracy. So experience is, in my opinion, the biggest factor.
I have no doubt that sometimes, perhaps for the entry-level roles, they will discriminate against age but for senior roles, due to the cost of the candidate and the potential damage they can do, a younger candidate without the experience, could affect them badly.
I am a contractor and for the most part it's still, thankfully, a meritocracy. So experience is, in my opinion, the biggest factor.
I have no doubt that sometimes, perhaps for the entry-level roles, they will discriminate against age but for senior roles, due to the cost of the candidate and the potential damage they can do, a younger candidate without the experience, could affect them badly.