Help...UID Yellow 'Buttercup-like' flower

Help...UID Yellow 'Buttercup-like' flower

Observation - Help...UID Yellow 'Buttercup-like' flower - UK and Ireland. Description: Growing in woodland near a water course. Flowers about 15-20mm. Really not sure about this. Could it be Goldilocks Buttercup? Leaves seem odd so I'm probably not even in the correct area!

Growing in woodland near a water course. Flowers about 15-20mm. Really not sure about this. Could it be Goldilocks Buttercup? Leaves seem odd so I'm probably not even in the correct area!