In message , at 17:37:54
on Mon, 22 Jul 2013, remarked:
The regular single has "no restrictions", which I think means that
section 16(ii) of the NCoC isn't over-riden, viz:

"stay in overnight accommodation when you cannot reasonably complete
your journey within one day"

Some tickets have a condition that you must resume the journey by
midday the second day, but not apparently this one.

I agree that as a "Day single" it could be argued that the validity
expires overnight anyway, but the National Rail site is silent about
any difference between "anytime", and "day" singles...

http://www.nationalrail.co.uk/times_...pes/46550.aspx

Not on that link it isn't. "Anytime Day (Single and Return) tickets must
be used on the date shown on your ticket and up to 04:29 the following
day.".

That's wrong, because of the not-being-able-to-complete condition I
quoted earlier.

The only standard class fares offered are Anytime Day Singles,
"Valid 1 day only".

Or until 4.30am the next day, of course.

But modified by the BoJ rule quoted?

You tell me! I'm quoting the TOC web site.

If it really is an Anytime Day Single, it should be OK, but it's
difficult to know who to ask to confirm this.

As for your immediate issue, why not buy the most appropriate tickets
once landside at Gatwick?

Time may be a problem in terms of getting a ticket so advance purchase may
be the only way to get back to Cambridge on the night.

"purchasing in advance" please. 'advance purchase' is a completely
different type of ticket.
--
Roland Perry