I voted for England, as it's my home country. I also really enjoyed the y8 French trip (we stayed in Normandy), but that is the only time I've ever been outside of the UK and Ireland, though I am going back on a GCSE History trip next year (y10) and I'll also be going to Belgium as part of the trip. With regards to countries I'd like to visit, I'd say the Netherlands and Switzerland come high on the list and also Australia (though I can't abide the heat- or travelling, so maybe this isn't a sensible idea- I'd love to see wild Brumbies and kangaroos though). Switzerland seems such a beautiful place (and it's the setting of Frankenstein, which is my favourite book). I have a Dutch surname, so probably have Dutch ancestors, hence my desire to visit the Netherlands.
On the whole, though, I'd rather stay in England. I find other cultures interesting, but I hate travelling and have never been on a plane, so would feel a little apprehensive about flying. Also, I live in Yorkshire and it's so beautiful- there's no need to travel really.