From Longman Dictionary of Contemporary Englishfrontbencherfront‧bench‧er /ˌfrʌntˈbentʃə◂ $ -ər◂/ noun [countable] PGPsomeone who sits on a front bench in the British parliament → backbencher
Examples from the Corpus
frontbencher• She is also one of the few Labour frontbenchers with ministerial experience, having been a junior Education Minister. 