There are many tried and tested ways of keeping hangers in place while on the move. Where some of those ideas fail, the Travel Hanger is a simple solution that works. Clothes slide over the opening at the bottom and there is little chance of the hanger falling off because the top is a closed loop.
The hangers are sold in sets of 10 and are available to purchase direct from EDG, the supplier. They do work very well, but £24 for 10 hangers is pretty expensive.