[James2001]

DVD releases of stuff (particularly TV series) used to just use whatever copies they came across first, whether they were broadcast, syndication, alternative edits... which may be what happened with Sonic above (of the most recent copies made for a broadcaster) so no guarantees you'd get what was made in the first place...  And even if they had the right copies for home media release didn't mean they'd screw up something else along the way.

I remember when The Thin Blue Line was pushed out on DVD.  The first series episodes are in the wrong order from broadcast for a start, and the second series episodes (in Region 2 anyway) often run longer than the original broadcast slot (one episode is about 42 minutes long - it went out in a 30 minute slot).

I always presume including the longer edits it often intentional, it happens on a fair few DVD releases, I know several episodes of Bottom have longer edits, and the Sickness and Wealth episode of series 6 of OFAH as well (that one's also missing music and crowd noise dubbed into the Nags Head scenes, so they sound strangely quiet).

I know Dirty Feed did a comparison of the extended DVD versions of The Thin Blue Line and the broadcast versions, which were on the iPlayer at the time (sadly gone now)- now we instead have to put up with Gold showing awful cropped to 16:9 versions, that are also quite ridiculously flagged as HD (when the only proper HD is the recreated end credits, the rest isfairly obviously all cropped and upscaled SD and looks aterrible).

I know those GMTV2/Pop airings of Sonic were the first time the "sonic says" segments at the end were seen in the UK, they were always cut out on Channel 4, TCC and the VHS releases (probably for the better).