thick end

English

Noun

the thick end

1. (UK, colloquial, idiomatic) Most; the greater part (of an amount of money).
   • 2014, Michael Russell, East End at War and Peace (page 195)

     How much did the M1 cost? The thick end of £20M pounds, in fact. Yet the limited availabity of taxpayers' money meant that Britain could never hope to compete with the two world superpowers, Russia and the USA, […]