Tiny silver insects in the phal bark

[en3rmax]

Hi there,

I was looking at my phal tonight and i could see some very tiny little silver insects crawling on the bark, this is the original bark as the plant came to me easter from a florist.

What are the little insects? and what's the best way to get rid of them, my phal seems to be doing fine though.

I live in the UK if that is any help

thank you very much