[Request] Fish pie in puff pastry, with boiled eggs

I'm looking for a recipe my mother used to make (I guess in the late 80's).

It was some sort of fish pie (it used white fish, mostly likely cod or haddock). It also had chopped boiled eggs in it, possibly sweetcorn, a creamy white sauce, and was wrapped in flaky puff pastry and presented as a long rectangle (as opposed to a round pie)

Closest I can find is the Russian Dish: Salmon Coulibiac, but that uses salmon, and also shortcrust, its not really that similar

Thanks

bon appetit