Breadcrumbed plaice with parsley sauce

For the parsley sauce:

700ml milk

1 bay leaf

2 cloves garlic

1 sprig of thyme

35g butter

35g flour

1 pinch white pepper

1 bunch of parsley chopped

Juice of half a lemon

For the crumbed plaice:

4 large or 8 small fillets of plaice

75g panko breadcrumbs

1 lemon zested

1 tb chopped parsley

1.5 tb golden rapeseed oil

Freshly cracked black pepper

salt flakes