Thanks Garin for posting the link. I have had close look at the tours on offer, but as you say the transatlantic air fare is not included, so it is difficult to work out a final price.
The only tour that I would be interested in is 'Castro's Cuba' and that is priced at around £1099 mark for 12 days.
However with the additional flight back to Havana required, plus the return transatlantic air fare to add on also, the cost would be well in excess of the Saga tour I'm considering.
Nevertheless I much appreciate you posting the link.
I have just found this also, which is very interesting:
Cubre Libre tour Prices are £1249 and include transatlantic air fares. However on this tour there is an awful lot of walking involved and few meals are provided, other than breakfasts. This tour is mainly designed for the younger element I fear. Just re read the itinerary and YES there is far too much walking involved for me (eg: a 12 km hike on one day!!!).
The Saga tour seems to cater the best for my needs I think.