Hello, I graduated at 25 for a bunch of reasons did a foundation year (home problems) , took a year out due to health reasons, did a year in industry placement, just graduated in july 2024 and a few days ago got a called and secured a role in a graduate scheme starting in september.
I will be 26 by then and I too am worried that'll i'll be in a scheme with probably 21-22 year olds, however meeting people at AC's were all in the same boat and work is work at the end of the day i've made friends at work from all different ages and there will be older people there. I've even spoken to people on this website very recently who are also graduating in their mid 20's theres nothing wrong with it.
Yes you may feel like you've had to grow up a bit later than others (PHDs often feel this way especially if they lack 'real' work experience), but does it matter if you get to do/become what you want? We need more information to answer this question such as why do you feel its late, is it because you wanted to be more established in your career path or like others mentioned is it about marriage/kids etc?
I wouldn't even consider you a 'mature' student if you started your studies before 25.
Anyway regardless it's not bad at all but i understand all your fears perhaps if you elaborated on them we'd be able to help more. However from someone whos graduated at 25 and just got onto a graduate scheme it feels great 🙂