FTSE Russell announces the changes to the FTSE AIM UK 50, FTSE AIM 100 and FTSE AIM All-Share Indices. The changes will be applied after the close of business on Friday, 21 December 2018 and will be effective on Monday, 24 December 2018.
Last trading day before BMN are included in th AIM 100 index.
LSE have said they have contacted their data supplier and awaiting a response.
You can email them on info@lse.co.uk, if more people email they may treat with more urgency.
The current information regarding shares in issue is misleading!!