Please stop Pelham obstructing rule of law (8)
I believe the answer is:
estoppel
'rule of law' is the definition.
'estoppel' can be an answer for 'rule' (estoppel is a kind of rule). I'm not sure about the 'of law' bit.
'please stop pelham obstructing' is the wordplay.
'ESTOPPEL' is hidden in amongst the letters.
However, I am unsure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for estoppel that I've seen before include "Legal principle" , "bar" , "Conclusive admission" .)