But where is the illegality*? You don't do your case for the police any good by supporting the use of a trumped up charge (two people on a bicycle when it has clearly been adapted for two as required by the law) especially when you suggest its a proxy for doing something you didn't like the look of but was perfectly legal. And then to add to it with a little vindictiveness for his "attitude". I think I would have an attitude if the police stopped me for riding perfectly legally but the difference is I would not represent myself but pay a lawyer to take the case apart.
* and that sort of adaptation is not horrendously unsafe but actually quite common. One of the merits claimed for it is the child is cradled by the arms and body of the cyclist and thus better protected in an accident than flying off strapped to the bike.
1. Police officers quite often and quite correctly stop road users having noticed a number of offences. We could then:
- report them for ALL offence
- ticket them for ONE offence and warn them for the others
- warn them for ALL.
In this case 'warn' = an informal verbal warning. We can't mix tickets/summons and can't give more than one ticket. Its therefore common practice to have your attention drawn by one offence, but end up giving a ticket for another offence present and simply warning for the rest. On the whole this tends to go in the road users favour as its much more common for us to ticket the more minor offence.
2. There are no stated cases in this matter for a legal definition of 'adapted' (caveat: that I could find after searching. I stand ready to be corrected!). For both ends of the scale, I don't think anyone would think a properly bought and fitted child seat wouldn't count, and at the other end of the scale I don't think anyone would accept a child tied on to the frame with rope would count. This chaps was some where in the middle, and imho, towards the 'unsafe' end of the spectrum. The legal recourse for him if he believes it an acceptable adaptation is to challenge it, have the court find in your favour and make the stated case. He tried, and the court found his adaption was unsafe. Legal precedent set - a gaffa taped seat to the frame won't count as 'adapted' for the purpose of this law. (baring appeals from him)
3. I'm not going to lie to anyone. Yep, if I stop you for a minor road traffic offence, and find you to be courteous and polite, you can bet you mortgage on the fact you're walking away without a ticket. If I stop you and find you to be abusive, rude, arrogant etc. I'd wouldn't gamble on it.
The difference will be that whichever stance you take, I will be nothing but courteous and polite to you regardless.
If you want my one criticism of the police in this case, they shouldn't have given him a fixed penalty, they should have reported him. You have the absolute right to refuse any FPN offered to you, and the fact he ripped it up gives a good indication he wasn't accepting it. Obviously if you refuse any FPN, you should then expect the police to report you.