"Chris" wrote
What to add to make the ideal soil for vegetables?

The soil is good - but a bit heavy.
Should I add Irish Moss Peat
or a general purpose compost?
Or something else?

My veg plot is fairly small - and so cost per square yard doesn't matter
much.

Heavy clay soil is OK for most veg, it is more important you check the pH
than worry about it being heavy as a clay soil is a fertile soil. If you
want to lighten it to make it easier for you to work then see if your local
green waste recycling plant will let you have a trailer load of soil
improver and dig it in. You local Council should be able to tell you
who/where they are.

--
Regards
Bob Hobden
17mls W. of London.UK