Indeed, you may not be as privileged as someone born in an affluent suburb of London. Hopefully someone that did have that background would take that into account when making assumptions about your past and motives. Different people can have different privileges - you can't necessarily win at privilege.

If you at least skim read the checklists you will see that most of the examples don't take the form of anything like handouts or support groups.

By telling me "Do not talk to me about privilege, I know what poverty is." you are using the concept of privilege in your argument and are essentially telling me to check my privilege. I'm ok with that.

Privilege isn't about discrediting anyone. It is about helping us understand the experiences of other people.