The Leading companies in the UK is
https://www.tokamakenergy.co.uk/contact/
https://www.iaea.org/
See ITER, MAST-U,
the most recent and outrageous scientific article is http://iopscience.iop.org/article/10.1088/0029-5515/55/3/033001
as the paper quotes the Q of fusion as well above 1!
I am...