There is a little map of how to find the club Here. The best plan would be to go to Harrow and Wealdstone station by underground/tube train and walk from there.

Take the District (green) or Circle (yellow) Line from South Kensington to Paddington and change to the Bakerloo (brown) Line. Harrow and Wealdstone is at the end of the line.

This area is my old stomping ground but I have not lived there for many years. Maybe there is someone out there who is local and could meet and or accompany you there? Anyway have a good night.