You can read the full document here: https://www.thersa.org/globalassets/pdfs/reports/1292---venturing-to-retire-final-combined-170418.pdf
Tom Selby, senior analyst at AJ Bell, comments:
“Introducing a flat-rate of pension tax relief sounds great in theory but there would be huge practical challenges to overcome, most notably in relation to defined benefit schemes. Without an answer to the question of how a flat-rate would be applied to DB savers any recommendation is simply hot air.
“Even if a flat-rate of tax relief could be made to work, the Government would need to be absolutely confident such a reform would actually encourage more people to save and there is little evidence so far. Undersaving for retirement remains arguably the biggest challenge facing society today, so any major reform to the system must only be entered into if there is a significant degree of confidence that it will result in more people putting money away for their future.
“Pragmatically, I doubt a Government with a razor-thin Parliamentary majority and facing the colossal challenge posed by Brexit will have much appetite for something as controversial as this.”