Any trained and certified UK based stock ETF Forex commodity trading brokers here?

Salam all,

I’m looking for brokers in UK who accept small pool investments.
I’m talking really small investments pool like 100-500£. Of course that won’t yield much profit but if there are 2000 ppl in this pool won’t they get some profit?

If any1 is open to this form other than traditional sukuks mudarabah bonds / investment plz reply me.