Alice Trout Moves Mysteriously

[Stooo]

I was in London in 1974 and saw this on a hoarding on (I think) Clapham Common- the lettering was neat- it did not look like typical graffiti at the time . It stuck with me over the years and I have been puzzled by its meaning. I have asked many friends over the years, but no one has been able to give me an explanation.

Oh hell, we're the first result on Google

[McAz]

https://twitter.com/trout2trout

Sinister eyes!

[Adele Hulse]

Uhh! I am Alice Trout you are looking for.
A dentist in Delhi called me Alice when he pulled a tooth in 1974 and when I arrived in London the same year I took one look at a tree and knew I had to become a gardener.
I added Trout in honour of Kilgore Trout, which surely I do not have to explain.
I worked in gardens around South Kensington. Walked miles across London, barefoot, with a gardening fork and a grin. Remember the 100 Club when it was Jazz,
Had a ball.
Love Alice