Didn't know where the best place to put this was, its not a deal as such so probably best in Misc, feel free to move if you want!!
Anyway, this tip has probably been posted before but couldn't find anything! Been after a train ticket from Derby to Manchester, could only find the standard day rate at £19.50 (which you have to change at Sheffield), so thought i would look at two journeys and it came up a lot cheaper. Derby to Sheffield £5, Sheffield to Manchester £5.
Not the best deal but its a decent saving, just takes a little extra effort!!
Also if you buy at virgin trains instead of trainline its free postage compared to £1.