front bench 
noun
(In the UK) the foremost seats in the House of Commons, occupied by the members of the cabinet and shadow cabinet: his place on the Opposition front bench will be at stake [as modifier]: a front-bench spokesman on European affairs...
- Worse still, according to Phillip Johnston, is the prospect of a Tory front-bench spokesman clashing with a speaker representing a Scottish seat.
- I am a senior member of the National Party - a front-bench member.
- It figured that New Zealanders do not like criminals, so the front-bench members will make their speeches against criminals.
Derivatives
frontbencher
- These are the government frontbenchers, government backbenchers, opposition frontbenchers, and opposition backbenchers.
- It is being run by advertising agents, frontbenchers and lobby correspondents.
- He and other frontbenchers introduced private members bills to stop the so-called party of the people from selling off the people's land around Sydney.