Northwest would have to be the entity selling shares on the AIM, not MM's.
From Google, "The London Stock Exchange (LSE) established the Alternative Investment Market (AIM) in June 1995 as a junior, more flexible market to provide smaller, high-growth companies with access to capital, replacing the Unlisted Securities Market (USM). It was created to offer a regulated environment with lower compliance costs than the Main Market, catering to emerging businesses needing liquidity."
MM's selling to investors would not comply with the fundamental purpose of the AIM.
Further, why would Northwest henceforth sell any shares for $.24 on the OTC market if they can sell the same shares for $1.71 on the AIM? And yet Northwest apparently is.