I went past the Sir Arthur Conan Doyle Centre just now and there was a faux-by-four parked square in front, all the wheels on the pavement. Not a warden to be seen.
Now I know we have Uber eyes on this forum so here's an idea;
Why don't Uber develop a simple phone app that recognises registration plates, times and locations and works out if a vehicle is allowed to park there from two images five minutes apart?
If a ticket is issued on the basis of the data and upheld the phone owner gets the commission with a small kickback to Uber.
That way all students become traffic wardens and the city is immediately purged of this level of idiocy. The main objection I can see to this scheme is that it would actually work. Commission-hungry students wouldn't stand for the informal arrangements that clearly exist here and there in this fine city.