Hey yeah I'm applying for Sheffield Hallam and they said there will be a 2-1 interview, a group interview, a problem solving task and a written task....
Apparently the written task, they don't expect you to know anything specific, it will be a question like why do you want to do radiography, and they just assess your quality of written communication. As for the other tests, they didn't give us that much information.
To be fair though, I don't blame them for bringing in all these tests, most places have <50 places and >500 applicants, and especially this year with the fees going up, there are going to be a lot more applicants, many of which will just be there for a free degree.