Bird of Paradise Plant

follow the stem down as close as you can to the leaves and cut it off. bin it. Give the plant a good water and feed if it hasn't had one recently. If it has been indoors a lot take advantage of the warm weather to give the leaves a sponge down/shower and then place outside out of direct sunlight to dry off.
I've just done my aspidistera :o)

She looks dry

You have new leaf emerged so its fine i think,mine is pot bound compared to yours so i doubt it needs repotting(same pot),mine has been outside since may and i have lots of new leaves this month also i think my next flower stem is gettig ready :O)
I can upload pics of mine if you like,there may be some on my profile already.Ive not watered too much as they are used to being in a dry hot/ humid climate,they can take some neglect :O)

Apart from a water, it looks fine to me - copy what the above has said. The flowers only last a few weeks, then slowly turn greyish as the seed develops. They prefer being root bound as Joolz has said.

You picked the right variety for the UK - Reginae do not grow that tall. Nicolai grow like small shrubs, not unlike Musa and are too tall unless you have a 12-16 foot conservatory, though are slightly more frost tolerant if the soil is kept bone dry.