Small vans are a bit odd in that they don’t really offer much more than an estate car, other than chuckability when the going gets muddy, plus the fact people can’t see the bikes. They drive crap.
I’d second the medium van, transit etc. They will be able to rack up for bikes at the sides, get in the back to get changed in foul weather, even put down space to sleep in the back when needed. Tool shelves etc too. Sorry can’t help on the small van recommendations, but a swb transit is as easy to park as a car, costs no more than a small van and the only downside is that you’ll be limited to 60 on dual carriageways and 50 on single carriageway roads as it’s over 2T gross.