Hey, we've got two more votes today!
I wanted to add another option to the poll, but it seems I'm out of time, I can't edit it now. So, I put it here anyway, if you'd like to choose the RAF museum (for plane lovers, 10 minutes walk from Colindale tube station, also free), please state it in your post!
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Another non-English speaking - DX'd at age 38
"Aut viam inveniam aut faciam." (Hannibal) - Latin for "I'll either find a way or make one."