 His most ambitious later work is the allegorical work "Manufactures" (1864–70), one of four marble groups depicting the industrial arts, for the London Albert Memorial by George Gilbert Scott.Although Weekes was not on Queen Victoria's original list of sculptors, being selected to work on the project only after John Gibson declined to participate, his group occupies the preferable south side of the finished monument.A central female figure holds an hourglass, symbolising the critical nature of time to industry, while an ironworker stands at his anvil and a potter and weaver offer their wares.