Non-parametric demand analysis is utilised to establish weakly separab
le subset's of monetary assets for the UK personal sector in the conte
xt of a utility function consisting of durable and non-durable consump
tion goods, services, leisure, and monetary assets. The admissible col
lections of assets are then combined using Divisia aggregation in orde
r to produce monetary aggregates which are consistent with economic ag
gregation theory. We investigate the money demand properties of the ag
gregates and find relatively simple, stable long-run money-demand func
tions for the UK personal sector with well determined error correction
dynamics.