they did give me a small sum for a house deposit about 25 years ago. I think it was £20k
I meant a fairly low paid professional job...and am now in management.... ...My current salary is slightly left of 50k by which I mean not well paid like a banker or lawyer.
I have not always been in this career. I switched from a higher paid one which was london centric
I have invested in a property portfolio
...the house value. I would guess very roughly a million now
So you were given a hefty deposit (£20k was hefty 25 years ago), you earn a good salary in a professional role, and you used to earn even more. All of these mean you were able to save/invest early in life, and as a result you own a property portfolio.
Your portfolio means your income will exceed what you earn from just your job, so talking about being 'low paid' is fairly ridiculous.
You chose to change to a more rewarding career, and you obviously had the freedom to make this choice because you were financially comfortable. And when your parents die you are likely to inherit at least a million pounds.
But you object to the fact that your parents haven't given you even more?
So AIBU and a grabby cow?
YES! You are massively well off by most people's standards. Stop obsessing about what your parents supposedly owe you and enjoy it!