I applied to both Swansea and Portsmouth for English with Creative Writing, and I liked Swansea much more. The two lecturers who spoke to us seemed really nice and helpful, and the things they said sounded like they knew what students thought when they were going into the course, like they told us not to worry if we weren't that into poetry or were a little scared of it, as they were when they did their degree, and that they'd ease you into it and help you understand it so you'd enjoy it, which I found really comforting. I liked the area a lot more as well, the beaches are amazing.
Whereas at Portsmouth, all the buildings are scattered around the city. The city is nice, but I preferred Swansea. Also, at the open day, the lecturers that spoke to us seemed a lot less friendly, they were saying things like "If you don't get your work in on time, you're out. You'll be expected to read out all of your own writing to the rest of the students. If you don't, you're out." Which just made them come accross as *******s, compared to the Swansea lecturer who said he understood how nervous people might feel sharing their work, but you have to do it to become better writers, and he'd make sure it was done in an intimate environment so you wouldn't feel pressured or anything.
Overall, go to Swansea, it just seems better in so many ways. I know the things I've quoted above may make it seem like the Swansea lecturers coddle the students, but that's not how it came accross. It was more like they were trying to make the course as interesting and enjoyable as possible, and to make us into the best writers and students we could be, as opposed to Portsmouth, where they were acting like they were same amazing uni that had really high standards, and if you didn't match up to them, you didn't deserve to be there, when in reality, they're not that good.
Swansea is my first choice, Essex is my 2nd. I rejected Portsmouth completely.