Solved: DAR 19 Autoped scooter 1916

[D-type]

2 wheels this time.
Who?  What?  When?

[Carnut]

Another one that's going to be exceedingly difficult!

[D-type]

Another one that's going to be exceedingly difficult!

To make it a little bit easier, I have added the missing photo.
My apologies - I blame the new laptop I got for Christmas.

[Carnut]

Trouble was you'd added all the answers as well, which made it exceedingly easy instead!
So I've removed the picture for you to repost it with a new caption...

[D-type]

Whoops! My apologies! - Personally, I blame Windows 10
Caption changed (Hopefully)

[Johno]

Surprised by my own success. "lady on scooter 1900" into Yahoo search and there it was.  Lady Florence Norman, a Suffragette, on Her Motor-Scooter (an Autoped) in 1916.

[D-type]

Spot on.  A point is winging its way to you.
That sounds like the same site as I found by chance.  The caption I have is "1916. Lady Florence Norman used her Autoped to scoot to her offices where she worked as an administrator in central London.