As noted earlier, I am just curious. I have a general dislike of overly bureaucratic systems because they inherently lack flexibility. Thus when a situation comes along like this, what does said bureaucracy say should be done? I can't see it clearly spelt out which means we're into the "interpretation" range.
In that case, arrival at final destination on ticket, so your taxi should go to the station so you have a comparison.
We are only into the "interpretation" range because the railway and its agents did you a favour.
Many will think you should return the favour by accepting your delay was, by the sound of it, actually 29 minutes at your house, and not claim :P
I'll certainly be putting in a claim for 30-60 mins, so a refund of a princely £3.50 will probably be heading my way. I don't really consider the taxi-to-home much of a bonus. Unlike many people I don't mind walking.
Furthermore, I'm *not* the sort of person to claim entitlements; quite the opposite, I'm opting out of an excellent pension scheme at the loss of thousands of £'s a year for purely ethical reasons. Oddly enough the TOC's consistently poor treatment of passengers doesn't engender me to feeling like I need to give them a "break" by not claiming.
That isn't the impression you are giving though
I agree the TOCs should give passengers their rights, and I spend a fair bit of time trying to defend their rights, but the best way to fight them is to deal with those specific issues.
Yes you have the right to a claim, but being given a favour and then saying that favour means the compensation rules are open to interpretation, then asking if you can claim for a 75min delay to your house (100% compo) compared to an actual delay of 29 mins (0% compo) is going to make some people rather annoyed.
(I'm sticking with 29 mins, as you said about half an hour, and I expect you will be over-estimating rather than under-estimating

)
I think this thread has run its course now!