lime

can anyone tell me the difference between garden and builders lime?
is builders lime ok to put on the plot?

Take a look at this site: http://www.aglime.org.uk/technical10.htm
You can also take a look at the topic 'builders lime' - on this site by doing a search.
It would appear lime is not as simple as it sounds!  so buy yours from an agricultural supplier/garden centre and read the instructions.

Good luck
O