JKR has made a very generous offer on Twitter:
J.K. Rowling
https://x.com/jk_rowling/status/1929113511004664078
I mean this, by the way. Donate £10 to lumos, I'll draw three names out of a hat and we'll have dinner. It could be KFC, but the wonderful JamesChiavarini has just suggested his restaurant, so it might be there instead (travel and accommodation on me if you're not in London).
Offer stands! Applications close at midnight on Monday. A £10 donation means your name will go into the draw.
https://wearelumos.org/how-you-can-help/donate/
If your name’s chosen and you’re outside London (or the UK) I’ll pay for travel and accommodation.
Once donations have been verified with Lumos I’ll select three donors’ names at random (can’t promise a literal hat, but who knows).
I’ll match the total sum donated to Lumos between first offer and midnight Monday.
And once my three fellow diners have been chosen, we’ll have a vote on whether we’re having KFC or going to Il Portico.
Additional offer from John Boyne:
John Boyne
£10 donated to Lumos. Whoever has the good fortune to win the raffle and have dinner with you, I'll donate £1,000 to the charity of his or her choosing.
This was inspired by JKR's ongoing twitter spat with Jolyon:
I've never sought to auction dinner with myself at a Michelin-starred restaurant with ‘a selection of wines from [my] own cellar’ as you have, Jolyon, but if anyone wants to bung Lumos £10, I'll draw a name out of a hat and we'll split a KFC bargain bucket.