Your misreading it or not not doing things right.
"Additionally, EU rules state that UK VAT rates cannot be lowered below an EU harmonised standard rate of 15% or adjusted on specific goods
without approval of the Commission."
Control right there.
"
Over the seven years from 2007-13, the UK paid over £15.4 billion in VAT contributions
to the EU, an average of £2.2 billion a year. This amounts to just under 18 per cent of
the EU’s annual VAT revenue, despite the UK population being only 13 per cent of the EU whole.
http://forbritain.org/euvat.pdf