P&O have started bombarding me with emails about cheaper tickets., to be booked by 11 April and only for certain crossings. With the caravan they are down to about £190 which is the same as last year, but is £140 cheaper than the same crossing was when I priced it at Christmas.
So, their smart marketing has lost them, my business, as I booked with Norfolkline instead.
Anyway, if you haven't booked yet and are determined to part with cash, P&O are doing offers. Car + 9 for £60 IIRC