This is what I have sent to mine, who happens to be Sir Keir Starmer:
Dear Sir Keir,
In this afternoon's debate, I trust you will be supporting the demand for a referendum on any 'final' Brexit deal with the EU.
In spite of all the obfuscation from most Tory, and sadly some Labour, MPs Brexit could do terrible damage to our country. In the 2016 referendum, it is plain that many, if not most, voters had no real idea about its implications.
It is, therefore, vital that the British people are given a REAL choice rather than the fictitious one they were offered last year.