Here's an example of why I'm not as dogmatic about pavement riding as
@Drago This is Frant Rd, to the S of Tunbridge Wells.
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It's a stiffish hill about 600m long with an average gradient of 6% and a max of 10%. Being an old fart that's crawling speed for me (no faster than 15km/h, down to below 10 on the steepest bit). I don't know what the speed limit is on that stretch, I think it's national speed limit (60mph) but there may be a 50 limit on there possibly. Anyway, it's quite straight and wide so vehicles are going at quite a lick. Even a considerate pass can have quite a slipstream/wind impact. It's also narrow enough for a driver to decide to do a close pass if there are oncoming vehicles. They shouldn't, but they do.
So I hop onto the pavement. It's not a cycle path, it's a footway. I'm now being naughty and irresponsible. But I first do an extensive risk assessment. I get out my clip-board. Can I see a person using this footway? Nope. Have I
ever seen a person using this footway? No, never. If I
did see a person would I, travelling at about 12km/h, be able to take evasive action/dismount before colliding with them? I think so. Are there any driveways or entrances, concealed or otherwise? Again, no.
I don't like that stretch of road, but it's a useful link on a number of my routes, so I do use it. And yes, I ride on the footway. It's a bit crap but it's no worse than a lot of dedicated cycle paths.
I'm not advocating hurtling through housing estates on the footpath on a bike. In fact, I'm not advocating anything. I don't really give a damn how other people ride when I'm not there. Just saying that I can and do choose the footway sometimes. Uphill busy/fast-ish roads are one such. In fact I did a couple of hundred metres like that at the weekend (but it's not as good an example as Frant Rd)
In the unlikely event that PC plod did see me and decided to give me a FPN I'd explain my reasoning, and if that did not sway their opinion I'd take it on the chin and pay up. It's a risk I'm willing to take.