There had been some resistance to the appointment of Churchill as Prime Minister within the Conservative party. However his dynamic approach and rousing rhetoric was bringing people round. Senior Conservative Party MP and military insider Sir Cuthbert Headlam observed the new confidence in him even as the physical signs of the threat to the nation became ever more apparent:
London is rapidly become like a besieged town – or, rather, is being converted into a defended zone.
Whether all the barbed wire defences and machine-gun posts in the Whitehall area are erected to cover the last stand of Winston and the rest of us against the invading Germans, or whether to prevent the government offices being raided by ‘Fifth Columnists’ and parachutists, one does not know. They are certainly formidable obstructions to most of us especially in the hours of darkness when one is confronted by barriers in the most unexpected places.
I am told that Winston is mainly responsible for them and takes the deepest interest in them. He appears to spend a lot of time inspecting our defences all over the country. It is certainly his hour – and the confidence in him is growing on all sides.
While Britain was gripped by the thought that invasion might come at any day, Hitler was still considering his options. It was only on 16th July that Hitler signed the order for ‘Operation Sealion':
‘Directive No.16 for Preparations of a Landing Operation against England’.
The preamble ran: ‘Since England, in spite of its militarily hopeless situation, still gives no recognizable signs of readiness to come to terms, I have determined to prepare a landing operation against England and, if need be, to carry it out. The aim of this operation is to exclude the English motherland as a basis for the continuation of the war against Germany, and, if it should be necessary, to occupy it completely.’
This was a lukewarm approach to a possible invasion. Most of his military advisers knew very well that it was going to be impossible to carry out the directive that summer. They knew as well as Churchill, who had already made his own assessment of the prospects for invasion, of the immense risks such an undertaking would involve.