I don't know very much about bees, but I think this is a mining bee, probably Andrena haemorrhoa which is an early Spring species that lives around sallow, blackthorn and dandelion. Mining bees are usually solitary, and nest in the ground. I found it around roots in the hedge, next to a Blackthorn bush and also some dandelions!
It is probably worth looking at this in large
Have a great weekend everyone.