Don't know if I have tunnel vision on this, but
I don't believe any one here thinks that a compact will near to a Nikon D5200 with a 600mm lens for image quality, and everyone knows there will be compromises with a compact.
The op stated
I would also like a "everyday" put it in the car or bag camera for when you don't want to carry around lots of gear.
This got me thinking about a Bridge camera with a 30X optical zoom which may cover me for the 600mm lens, It will be used about £150 budget
The zoom range and the budget exclude any bridge/compact with a larger sensor.
The desire for a bridge camera excludes (for now) compacts.
The biggest quality problem with the small sensor is noise. This usually is more of a problem when cropping, on an uncropped image, it does not usually destroy the photo.
The best way to avoid this is by having a better optical zoom, as optical losses are normally less obvious than sensor losses, though of course a longer zoom lets in less light, so as with most things there is a balance.
Good optical image stabilisation is a must, as "don't want to carry around lots of gear" would normally exclude a tripod
To me, this barrows the filed down a lot.
My suggestion of a Panasonic is simply because I have used them and owned them, the only other bridge we have had in the house recently in the price range is a Canon, and it is not as good as the Panasonic.
My suggestion is also based on what the OP was looking for, if that gets modified along the way, so might my suggestion.
There are Panasonic bridges available for less than the FZ82, but the FZ82 does a better job of getting reasonable pictures more often. (I have several TZ series to compare with)
These are uncropped photos from the FZ82, only resized to post here.
They would not stand up to being cropped without noise becoming too much for my liking, however with the long zoom, that is not such a problem.
None of them are supposed to be great photos, just what I took for comparison.
About 200m away
650m away, compares well with a Canon650+300mm+2X converter
Not certain how far
