In message , at 12:45:03 on Sat, 28 Jun
2014, MikeS remarked:
Despite your misgivings, it does have numerous tube-only destinations
available. Try Holborn for example:

Train 10:15 Cambridge [CBG] London Kings Cross [KGX] 11:05
Tube 11:20 London Kings Cross [KGX] Holborn London Und 11:24

As already explained the problems mostly arise when you specify a final
destination which has *both* tube and national rail services - as in your
original complaint about the suggested routes to Moorgate. It always pays to
think (and read) before you post ...

Take your own advice: remember what I said about Cambridge-Liverpool St
via Kings Cross and Stansted-Kings Cross via Tottenham Hale.

--
Roland Perry