I agree. This shows my age, but the process used to have to be done manually, which meant that there was a cost. My hon. Friend is quite right that, with modern-day computer payroll systems, for example, the cost is very difficult to determine.
I, like my hon. Friend the Member for Cardiff West, oppose the Bill as a whole, but given the compromise that we have got because of the EU referendum, we are in a good place. However, I would just issue a final warning. I hope Conservative Members will not, once the EU referendum is over, bring in legislation to fill in what has been left out of the Bill. That would not only be another attack on trade unions, which are among the most highly regulated sectors in our country, but would show the vindictiveness that still exists in a section of the Conservative party. I look forward to the introduction, not long after June, of a Bill exploring total transparency in party funding in this country. If trade unions can have openness in terms of their money, we should decide it is time for other donations to political parties to have the same type of scrutiny and transparency, so that people can make up their own minds when they go to the ballot box.