I don't know if it has been particularly bad (but I seem to remember you can check in the weather section on the bbc).
I think mine started last Friday (and I'm pretty sure my main allergen is grass pollen). I went to a bbq on Monday where they had just mown the lawn and I felt awful.
My symptoms are - itchy, runny eyes, an awful itchiness at the back of my throat, streaming nose (like you bend forward and a stream of see through liquid runs out!! lovely I know!), sneezy, aching head (but not like I would describe a full headache - it's more like a fuzzy head) and a general feeling of not being well. I also get quite bad at night and find one of my worst times is the early hours of the morning. It also makes me feel generally very woozy.
I don't think mine has got any worse. I'll check the pollen count for you now.