And in turn I missed your follow up ...
Trowbridge to London via Warminster and Salisbury - anytime Day single - 37 pounds or so
London to Manchester offpeak return - around 77 pounds (just a pound more than a single)
London to Chippenham - superoffpeak single - 28 pounds or so
Gives me flexibiity; I was in London until the early evening yesterday, and I won't be leaving Manchester until quite late on Friday. Glad I didn't use
LM▸ splits - their service was in chaos yesterday, and the 20 pounds or so saved on the return trip London - Manchester would have been far more hassle than it was worth.