Brompton owners

cateye 1200 front on the minimods mount, rear, cateye rapid x top of extended post and a X-lite 100 on the saddle rails.

Luggage, T bag, all else is inferior. New Borough bag, rear pockets are useless.

Luggage-wise I like Carradice: City Folder M if you want the kitchen sink, Stockport if it's just laptop and lunch. Tweed editions are nice but pricey (though still only about half of what the Brompton Game Bag costs!), and for any of the Carradice bags you'll need to buy a frame unless you've already got one.

What do people advise/use for lights (non-Dynamo) and luggage for the Brompton?

On luggage. I prefer the Mini O Bag for daily use as it is light and has a smaller frontal area. For a larger bag, I like Carradice's Stockport and City Folder M bags, which I got in limited edition red. I also have the very old Brompton touring bag with roll-top pockets, but I find it rather front heavy when fully loaded. If you are interested in the Carradice's I would secure a frame first, as they are in short supply. Some shops have them with frames in their display models, for example.

I had a secondhand game bag and sold it, found it too small a lot of the time.

Replaced it with a ferry bridge folder bad from updo, which is way roomier and has a hand laptop pocket, and zipped pocket. Use it loads more than that damned game bag.