Does anyone know what this is?

[Davethecat2000]

It's springing up in a few places in the flowerbeds.

Is it a weed?

My plant identifying app says it’s a red flowering currant

Amazing! Thank you @LadyCampanulaTottington .

I don't remember planting it 🤔, must be a bird drop!

Could be any one of the currants. Rub the leaves and if it smells of blackcurrant it is one. Alternatively white, red or flowering currant.