From nexexchange website7 Jun 2017 16:13
"Investors can deal on NEX Exchange through all major stockbrokers - Cornhill Captal, who were also at the event, is one of 47, while online trading is possible through Share Centre and Jarvis Investment Management. Securities are eligible for inclusion in your SIPP as well as ISAS and can retain eligibility under the Enterprise Investment Scheme. Tax advantages and reliefs such as capital gains and stamp duty and business property relief from inheritance tax are all available."