Slightly OT, but camera related. A few years ago C4 or ITV Tonight programme broadcast the footage that a cyclist had taken of his weekly commute. It was shocking the frequency of dangerous driving, near hits, agression, abuse and near assaults he captured. He had a helmet cam but also rigged up a rear facing cam attached to either his seat post or rack. It was sobering footage.
Perhaps a hi-viz gilet with words "CCTV in operation" would be a good idea to deter nutcases and pyschos? Was thinking this afternoon of acquiring one of those orange flashing lights that tractors or bin lorries use and mounting it on a 4 foot pole and attaching it to my rack, seriously

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This was brought on as I had similar situation to the OP but not on double whites, but the road was busy and narrowish. A few cars came past giving a fair amount of room, but traffic now oncoming but this silly bitch, another nurse in uniform thought she could force her way through. I anticpated her impatience by moving into primary, but she was determined to get past or over me, so when she changed down a gear to overtake I sat up and looked around directly at her so see her shouting "Get out of the f*cking way!" Bear in mind she is wearing her nurse's uniform. She was about 30 years old, white, and had red longish hair. But I put in a well timed wobble and she then held back. I guess she suddenly realised what a nobbette she was being. She then turned off left into a Shell garage about 25 yds on so her harassing and trying to run me down was totally pointless. U-n-b-e-l-i-e-v-a-b-l-e. A nurse as well, not the first dangerous driving one I have encountered I hasten to add.