Ideas for childfree birthday off work

[strawberriesfordays]

My birthday is coming up and I've booked a day off midweek.

I live in London suburbs. Can anyone inspire me with something to do on a child free day alone?
For reference, I'm someone who enjoys my own company so I don't mind rocking up somewhere alone. I'm just looking for something fun or relaxing to do.

Thanks 😊

visit a museum exhibition of your choice? i'd quite like to see the Six Wives exhibition at the National portrait Gallery.

Then have a nice lunch somewhere.