I think the QEII and/or QMII do the transatlantic crossing. HERE are a couple of posts on the QMII.

luci

Sme Early/Late season transatlantics now do the northern route stopping in canada,Boston or NY so they are worth a look.

There is a fantastic deal on the Celebrity Constellation coming over from NY 27th April seen it advertised for £499 including flight 1night in NY and 8 night cruise.

Thank you Lucy and Windjammer for your replies
I hope to book for autumn 07, fly to toronto to see my cousin then to new York and then relax on the Q M 2 back to Southampton.