Thank you all for your advice. I feel very fortunate to have been offered the free manure and it seems there is plenty more that I can have. The lady who has the horses, delivered 6 sacks of it and in return, I gave her some eggs. She is pleased to get rid of the stuff as it has been piling up for a long time. I had just bought two sacks of manure from the garden centre last week.
I only have two raised beds at the moment and one is already planted up with garlic and bulbs. I went a bit mad with the narcissi last year and bought far too many and there were about 40 different varieties. I ran out of flower beds to put them into so ended up putting them in the raised bed with the garlic.
The other bed is new and will need a lot of manure as I have emptied all my old dry compost in there from the greenhouse. I intend putting two trellises up to give shelter and grow some climbing peas. I will probably grow courgettes or squash in there too. I start them all off in the greenhouse so won't be putting seeds in that bed. We will be constructing some more raised beds once we have put up the fence to keep the chickens out. It's been too cold to do this at the moment as neither of us have very good health. Surely the bitter cold weather can't go on much longer!