Daisy like flowering plant

Daisy like flowering plant

Observation - Daisy like flowering plant - UK and Ireland. Description: This lovely plant is growing in my garden beneath a crab apple tree it has self seeded and I wondered if anyone knew what it might be? I am assuming it is an annual?

This lovely plant is growing in my garden beneath a crab apple tree it has self seeded and I wondered if anyone knew what it might be? I am assuming it is an annual?