Kerching!

[meridian]

If A50 is extended, then presumably we remain an EU member for the duration of that extension and would have to keep paying in as normal. Our net contribution is £9bn/year, so pro-rata £750m/month.

And I thought my maths was bad!

Regardless of the figure, whether A50 is extended or whether the WA is approved by Parliament, financially we will be treated as an EU member and will contribute as per the agreements.

The difference between the two is that an A50 extension means that we remain a member of the EU and so will still have MEPs, etc.