In the UK i'd rather have the Lifelines kit with me, if it was all I could have. The emergency blanket makes surviving a night stuck on the hills much more likely. Where we walk; the hills. There's nothing to make a fire with and nowhere to fish anyway. And I note neither kit contains the single item which usually makes an emergency easy to handle; a torch.
I know it's a bit like the trick question someone had here one time comparing a 10 dollar 'survival knife' from the supermarket, with some chris reeve quality one. The supermarket knife was the sensible choice in the US because there were fire starting items in the handle.
Best is buy Dougs and add a bivvy bag and torch.
The Sock