BottyBurp wrote:
Is that not littering?
Absolutely not

EPA 1990 s.87 (2) provides that no offence is committed under this section where the depositing of the thing is authorised by law. Now the law doesn't make any stipulation that the thing has to be the right way up. The biker has a licence and the bike presumably had a VED...

BottyBurp wrote:
But seriously, I agree with you Will. At the end of the day, yes - maybe the biker should have expected the Frontera to pull in front of him (after all, it is a 4x4, with associated attitude!) but you can't attribute an accident to being the fault of the innocent party, just because they didn't expect someone to pull across them.

FYI, where I live drivers of 4x4s are generally courteous to other road users - but then so are most other drivers.
Back to the incident at hand. I think that perhaps Homer might be asking the wrong question. There is a world of difference between "who is to blame" (which is what was asked) and "is there anything the biker could have done to avoid it." (or "is there anything the pedestrian could have done", for that.) In the extreme, the biker could have avoided the accident by not getting out of bed that day - but it was unreasonable when he awoke to expect that car would T-bone him. I suspect that it was also unreasonable (albeit to a lesser extent) to expect that having apparently given way, the car would resume the turn when the bike was almost on top of him.
FWIW, I did some further research on this. AFAICT, the Tesco store is the Tesco Express on Bolton Road, Ashton in Makerfield WN4 8PF.
Here is a link to the scene. The Tesco Express is on the lower side of Bolton Road, so the bike would have been travelling right to left along several hundred yards of absolutely straight road at about 40 mph. It's inconceivable that a driver exercising due care and attention wouldn't see the bike - particularly if the biker was using headlights!
Although speeding is unlawful, most drivers do it and so it is unreasonable not to allow for vehicles travelling at 10mph over the limit. FWIW, I suspect that 40mph might even be the average free travelling speed on that road. So, what was the primary cause? Was it someone travelling at a very predictable 10 mph over the speed limit, or was it someone unpredictably turning across traffic that had priority?
Of course, we don't know the full facts. (For example, we don't know whether the biker was using headlights.) Thus we can only speculate.