“Is Donald Trump still banned from the UK?”
He never was.
https://www.washingtonpost.com/world/british-parliament-pummels-trump-but-doesnt-ban-him-from-the-uk/2016/01/18/7daf64a6-be31-11e5-98c8-7fab78677d51_story.html
The one that wanted to ban Trump was:
Naz Shah suspended by Labour party amid antisemitism row
http://www.theguardian.com/politics/2016/apr/27/naz-shah-suspended-labour-party-antisemitism-row