Create A Unique List From Multiple Tabs Using Formula

[calum...@gmail.com]

Hi,

I have six sets of single column data (integers only) on six different
tabs of the same spreadsheet. Each column starts in A2. Each column
may have additional rows added at a later date.

What I would like to do is to list all of the unique values from each
tab into one long column on another tab.

Any help or ideas on how to acheive this using formula would be
greatly appreciated!

Best Regards,

CalumMurdo Kennedy