There was a guy who advertised last winter in Ipswich, he advertised on Ebay, don't know what his haylage was like but maybe worth trawling through Ebay.
I use baillie haylage, they deliver to suffolk and come down regulary, they have a website and advertise in H&H, they do 3 different size bales and deliver om pallets, they are coming to me end of OCt so PM if you want!
lincs forage deliver nationwide i think... and the haylage is niiiice (i've just trialled them and my OH is on his way to them now to place us a massive order)