I accepted a PhD offer in feb. of this year. now i have been given a far better offer by another institution. what can i legally do?

It says applications accepted throughout the year. think the advert went live in november. i'm hoping just an oversight, its a niche area and i cant see them putting 2 students almost in competition with each other, on the same brief. anybody heard of it happening?

I applied for a pre-defined studentship in january and got accepted in february. However, the studentship continues to be advertised on uni. website along with findaphd.com and others. Does this mean they are still looking for people? or just a mere oversight?

thoughts?

Hi Grugh, I applied for one which suited me. And by applying I mean emailing the sup. and told him I was interested + CV. got the interview and got the place. but still enquired about others (that were sort of non-starters) in the period between initial contact and interview.

After decoding your message i think you're asking if you should do a PhD based only on institution, with no interest in topic.
My answer would be no.