The local elections proved that Jeremy Corbyn cannot become PM

sir – The results of the local elections may have been “mixed” for both main parties, as Radio 4 would have it, but they were much better than expected for the Conservatives, and worse than expected for Labour.

They are only local elections with a low turnout, but they proved one thing to my unscientific mind. Jeremy Corbyn is unelectable. Thank God for that. Neil Coppendale Shoreham-by-sea, West Sussex

sir – Theresa May and the Tories have only had a reprieve. Now the real work begins. Get Brexit right and they’re home and dry. Get it wrong, and we’re all done for. Flo Kaufmann London N2

sir – I am beginning to wonder whether the Prime Minister, surprisingly, has a cunning plan up her sleeve. Given the opposition from various quarters, not least the EU, to both the “customs partnership” and to the so-called “max-fac” (technological maximum facilitation) solution, she may be waiting for a parliamentary vote that will force the Government to accept the customs union, whether in its existing form or an Efta version.

This, of course, will depend on so-called Tory “rebels” voting with Labour and other parties. As the threat of a Corbyn government recedes, she may actually be in a stronger position than we could have expected. Chris Scott-barrett Chesterton, Cambridgeshire

sir – The advice of senior civil servants to the Cabinet on the Brexit Irish border issue – that it would take five years to develop and install the new technology – is clearly a smokescreen to delay or derail the Brexit process.

Most senior civil servants and senior politicians (including the Irish prime minister) have no scientific qualification or experience. The basic technology is already in use here in the United Kingdom. Roadside speed cameras enable the police to issue fines for speeding using number plate identification software.

Separately, there is the technology of contactless credit and debit cards, which has been adapted for windscreen display to show that a vehicle has paid to use a motorway or bridge – for example in Sydney, Australia. Bill Filmer Lindfield, West Sussex

sir – The trialling of voter ID in five areas is to be welcomed, in order to tackle widespread abuse. Individuals such as pensioners being turned away would indicate that the new requirement was inadequately publicised and implemented.

Traditionally non-labour university towns falling to Labour at the last general election, through individuals using multiple votes, was a disturbing portent which must be stamped out. This could be done by ensuring that voters, particularly students, may only vote in their home constituencies, not their places of temporary study.

The widespread abuse of postal voting, particularly in ethnic communities should also be addressed. This could be achieved, perhaps, by implementing a strict reregistration process.

Such steps, coupled with longoverdue boundary changes, would re-introduce balance into the election process and help to restore a sense of British values of honesty and fairness. J W Smith Aylesbury, Buckinghamshire

sir – I am often asked for photo-id when making applications. I do not have a passport, and only have a pink paper driving licence, so more often than not I cannot complete the process.

How will I prove my rights in the future? Stephen Clough Wilmslow, Cheshire