I've got a few fans of my gravy recipe, but I think Poland is the furthest afield it's got yet. I'm flattered that you took the trouble to try it and very pleased you liked it.
The "secrets" for good Yorkshire pud / Toad in the Hole / other similar dishes - make the batter thick enough to hold plenty of air and really aerate it with a damn good beating. Then leave it to stand for an hour or so before cooking. Get the oven and the cooking dish really hot and splash in a little oil or fat, as has been said - it should be hot enough to just start to smoke. Pour in the batter, bang it in the oven and DO NOT OPEN THE DOOR while it is cooking (that's perhaps the most important bit).
Skitch - I go to a butcher's for most of the meat I buy. There's a really good one only about half a mile from my house and I know the guy there quite well. It ain't really cheap, but I find that with meat you generally get what you pay for and cheap stuff often isn't great (unless it's a cheap cut anyway, like belly draft pork or liver or whatever - all of which can be very tasty if done right).
Water in supermarket steak - yeah, I hear you. Buy the best you can get and when you put it in the fridge, take it out of it's wrapping paper and leave it on a plate (below any cooked meat in the fridge as you don't want anything from raw meat dripping on to cooked meat that's ready to eat - very risky!). Doing this lets some of the moisture evaporate out and this concentrates the flavour as well as solving the issue you mention. This is a sort of variation on "dry aging" the steak. It should be darkish before you cook it rather than bright red.
Where is "Silent Valley", by the way?