Not a big fan of the ad, but the fact that we’re all here discussing it in such detail certainly indicates that it was effective.
Yeah, I understand the logic and the patern. I just found it hard to believe an ad would imply that negative interpretation. But the simpliest explanation is usually the correct one and you mentioned earlier that it is a common theme in the UK to disparage redheads, so I guess that is it. Maybe the ad writters really believe redheads don’t get sex and that this ad would resonate with the “sexless freaks”.
The last one that I don’t get is “Bribery when you’ve got window washers”. Anyone understand this one? Does it mean I’ll wash your windows (or have them washed) if you do me a favor? The US equivilent being, “I’ll wash your car if you do me this favor”.
I assumed it meant, “I’ll pay you to not wash my window in 20 seconds with that dirty water and your bad squeegee.”
“Pikey” is the derogatory term for gypsies or travelers - “From the English “turnpike”, the place where itinerant travelers … would camp near a settlement.” Urban Dictionary. “Trailer trash” might be a US equivalent…
IOW they were calling Clarkson’s attempts to use a hammer on everything as crass and uncultured - which is a fairly accurate description. 
Grim