The UK general election of 1964 was an incredibly close run affair with as Mark Bunny showing in his
thread that a switch of only roughly 3,400 votes in 9 marginal constituencies would of swapped our timeline's result around giving the Conservatives rather than Labour a majority of 5 seats, or that a switch of about 8,500 votes in 20 marginals would have given them a majority of 17 seats. We've had a few threads on a Douglas-Home led Conservative victory in 1964, Blackadder Mk II's
The Crowned Prime Minister being the foremost example, but they generally seem to stop at the 1969 general election or after a brief epilogue.
What I'm more interested in was how it would affect the Labour Party - losing in 1964 but then winning in 1969, by that point they were pretty much guaranteed, and also probably in 1974 albeit likely with a reduced majority - and the country. Wilson would probably survive since he'd only been leader for roughly a year although there would bound to be some grumbling, however he also wouldn't have the salve of being in government and able to hand out appointments to help deal with internal relations. Governing for most of the decade would also be something of a poisoned chalice if our timeline's 1970s is anything to go by.
Would Labour have been able to do enough of a deal with the power unions so as to avoid the Three-Day Week? If the Conservatives managed to defer our timeline's 1967 devaluation that could be a rather awkward welcoming present, alternatively if they devalued it takes a bit of their reputation for economic management. IIRC the Conservatives were leaning towards industrial relations legislation which even though likely to be mild compared to what we saw in the 1980s would still be anathema to the TUC. Would no doubt see them pressuring Labour to repeal it and legislate to overturn the judgement in
Rookes v Banard, and however sceptical Wilson might have been about the unions at times I think he would have to go along.
In Place of Strife is dead even before it starts. A large issue in light of recent events would be Labour's attitude to British membership of the EEC. I'm sure that there a hundred and one other things I'm not thinking of as well.