R13...
Honorary Master
If its a single carriageway, there is no "giving" way legally, the car behind is legally allowed to pass by crossing over into the oncoming lane, if the lane markings are striped.
I had some idiot throw some marble like things at my car once because I wouldn't move into the emergency lane for him to zoom past. And then some idiot in a tank (Navara) also drive so close to me I got caught in his slip stream because I wouldn't move into the emergency lane too. Both of these idiots don't overtake when the road is clear ahead and overtaking is allowed they expect you to take the risk of damaging your tyres moving over for them.