Proventec, a UK steam cleaning equipment maker, has reacted to shareholder concerns about a lack of liquidity on London's Alternative Investment Market by listing its shares on a rival exchange.

Proventec will today list its shares on NYSE Euronext’s junior market, Alternext, after two years on Aim. The group has a strategy of growing its business in western Europe and about 70% of its shares are already held by institutional investors on the continent.