The first quarter growth figures for the UK are terrible, with GDP per head falling slightly, and they are consistent with an underlying economy which is very weak. As you can see from the chart below, quarter on previous year’s quarter growth in GDP per head was reasonable in 2014, but has been falling since. The economy has been suffering from Brexit uncertainty and the Brexit induced falls in real wages, and as I guessed immediately after the referendum the temporary boost to competitiveness has not been enough to offset this. (More discussion here.) 
UK GDP per head quarter on previous year’s quarter growth: source ONS
As Will Hutton says, in any other world there would be national soul searching. But the reaction of the Chancellor to the latest data is that it "reflects some impact from the exceptional weather that we experienced last month, but our economy is strong and we have made significant progress". The Chancellor says the economy is strong when GDP per head, the best measure of average prosperity we have, is falling. And the ONS said the weather had a relatively small impact.
This kind of Orwellian description of the economy (weak is strong) is something that I first noticed in the run up to the 2015 election. The first three years of the Coalition government were terrible in economic terms, and the government did not try to pretend otherwise. Everyone was expecting a recovery and it didn’t come. But that opened the way for dishonesty to emerge from 2013, as the economy began growing again.
UK growth in 2013 and 2014 was really no more than a return to normal growth, but it was enough for both the government and journalists to talk about a recovery, even though there are strong reasons for reserving the term recovery for growth that returns us to a pre-recession trend level of output. The idea that 2013 vindicated austerity was truely Orwellian: no economics student anywhere would get away with such a statement. The government started talking about a strong economy during that period.
The strong economy line became the Conservative’s key claim in the 2015 general election. The economy was pretty well their only strong point among voters, but that did not make the claim true. In reality we had the worst ‘recovery’ in centuries: it was not really a recovery at all because we did not move any closer to pre-crisis trends. Yet parts of the media - what I called mediamacro - accepted the strong economy line, and largely ignored an unprecedented fall in real wages and the associated decline in productivity growth the likes of which we have never seen before. For that reason I argued that the Conservatives won the election because of mediamacro.
When we see Brexiters repeat nonsense about borders between the EU and Switzerland, tell lies about how the EU stops trade with Africa and how they will spend the Brexit dividend they are simply continuing where Cameron and Osborne left off in describing the economy as strong. What Conservative politicians have learned is that the BBC in particular does not have either the expertise or the will to call Conservative politicians out on doublespeak. The more unscrupulous the politician the more they have exploited that weakness in our democracy.
 The response of Brexiters is to keep saying its not as bad as the government’s pre-referendum short term forecast. For some reason its a line that reminds me of this.