This trailer purchased recently cost £199.99 on special offer at http://www.halfords.com ( my old one 30 plus years old gave up)

This one is the middle size of three available, 102, 122 132 made in France, http://www.erde.fr The manufacturing standard is high with mostly encapsulated nuts, assembly takes about 45mins max, with the exception of the number plate for the trailer it is ready to tow away. colour coding the wings cost a further £8.00. The only modification to the fitted tow bar was the adding of a snap shackle to facilitate anchorage for the break away/security chain.  Thanks to Albert Rowe for the text and picture