With a couple of miles of quiet lanes, and around 10 miles of fairly straight bike path that takes me right to a river I'd like to go kayaking in. I've got a trailer that my daughter is too tall for and which I could modify. So I wondered about towing my kayak by bike. The boat in question is already 2.3m long; when behind my hybrid it would mean a vehicle of over 4m. This is only as long as a normal car. I have to admit, this is more for curiosity than something I'm likely to do, as there are awkward bits of bike path even for a normal-sized trailer
We've already discussed the practicality of towing boats behind bikes, this question is specifically about whether it's permissible (i.e. not forbidden either by law or by "...should..." clauses in the Highway Code). I'm interested in the UK situation; answers for other jurisdictions won't get accepted but should get upvotes from me