Thanks for the advice. Unfortunately, she hasn't accepted them and I think it's too late to keep trying.
Last night she lay down and let me milk her, which I fed to the piglets so they have had colostrum. As soon as I put the piglets to her, she jumped up. We then thought a pig crate would come in handy, so we made one with 2 metal hurdles and timber across the ends. we had it all secured and ready by early hours this morning, and got the sow in there....as soon as she realised she was trapped, she became quite vicious and kept charging at the timber ends, eventually managing to break her way out of the 4 by 2 planks!!! ......she was stronger than we thought!!
I think I will get a bottle of sedative just in case anything like this happens again.
Anyway, the piglets are slowly learning to drink milk from a tray