Thank you for all the advice and offers of help. I am in London by the way (but originally from Yorkshire),
I managed to remove the head and column together from the base and get the mini-mill on to the table. I would have rung Arc for advice, but couldn't as I was at work on Friday.
To start with I thought I might be able to lift the whole thing, until I realised how heavy it is! There is an American on Youtube lifting an American version of the SX2 on to a table. All I can say is he must be incredibly strong! And he did struggle. Don't try this!
When the head and column are unbolted from the base they tend to tip forward as they are heavier towards the front., I covered the x y table with some thick cardboard just in caseithey fell forward, but i managed to hold on to them.
I won't be using the mill for a while. As I said before I have a big telescope mirror I am making which I need to make some progerss on before starting on the telescope, The mini-mill will come in very useful for drilling accurate holes and milling some aluminium parts for the telescope. I have a lot to learn!
David