In article . com,
() wrote:

Hi Ken. There are 2 adults and 3 kids (all science mad). Using
http://www.thetrainline.com the cheapest we can get from where we
are to London is 151.20GBP, and it takes much longer door to door too.
We're down in Dorchester

Does that include a Network Card discount? Worth buying a card just for
this trip.

nationalrail.co.uk gives an off peak day travelcard fare of £81.60, so
£101.60 all-in if you have no Network Card and you can use it for the
rest of the year for discounted off-peak rail travel in the South East.

--
Colin Rosenstiel