and even worse - the EU at £12 billion PER ANNUM NET!
Ahem...
[Pedant mode]
UK gross contribution to EU in 2015 : £13bn
EU spending on UK in 2015 : £4.5bn
Net cost of EU membership : £8.5bn
Total UK Government expenditure in 2015 : £760bn
UK GDP in 2015: £1807bn
Cost of EU membership as a % of public spending : 1.1%
Cost of EU membership as a % of GDP : 0.4%
[/pedant mode]