Are there any internet cafes in Brighton, UK, that are open until
midnight or later (preferably 7 days a week)?  I'd like as many
options as possible, and preferably 1st-hand knowledge, as some of the
websites are out of date.

I can't think of any.

I had some visitors recently who tried to find somewhere open on a
Sunday - without luck.

So, how would you know if a website is out-of-date anyway - without
'phoning up or visiting during the listed hours?

This service relies mainly on Internet searches - rather than personal
knowledge - and as I am the only person on GA (so far as I know) who
lives in Brighton & Hove then ...

I doubt if anyone else would know!

Sorry!

Marcusidle,
If you offer Probono a magnum of champagne  - good champagne -  per
visit, maybe he will let you plug in at his place.  You'll have to
hang around Hove for a while, watching for a gentleman walking a very
old Yorkshire Terrier.  Have an iced bottle of champagne with you at
all times, so that you can immediately open negotiations.  (Maybe I
shouldn't have mentioned the magnum, he might have agreed for less. 
Too late.)  ;-)