Carrier was Home Delivery Network.
Like Geoff, I use Firefox, and so do not normally see advertsing. I did not know I was missing out on something exciting.
As instructed above, switched browers, but got P&O, Aviva, M&S, Action Hunger, More M&S, Holland America Line, P&O, AutoTrader, GiffGaff, Michelin Tyres, Audiobook, Visit Ireland... I've given up.
Perhaps it has access to profile information, and thinks I am not interested in purchasing ladies underwear.