I couldn’t watch a child at 8 do that unless they had learning difficulties.
Is she allowed to eat like that when the family eat out?
Does she have play dates where a meal is provided?
Does she have school lunches?
Other children can be merciless with their peers if they behave in such a boorish way at the table.
What are her parents thinking?
Picking up a chip with your fingers is acceptable in a casual setting, picking up a roastie is not.
It is rare that my children thank me for the way they were brought up but my eldest did regarding table manners. Apparently he had noticed that companies, when hiring or thinking of promoting, invite potential employees to a very elegant meal and just watch to see who is comfortable in the situation. These positions attract six figure salaries. He sailed through such situations because it was the norm at home to eat at the dining table, use cutlery correctly, engage others in conversation etc.
I would be insisting on proper table manners at my home so that the child at least knew what was the accepted thing to do.
Estranged Son and Future Granddaughter
To think that London, or anywhere else for that matter, does not belong to any one demographic