It's always busy and because it offers a bring your own bottle option, it can be a good value destination, especially when you go for mixed mezze between a few of you.
If you're unlucky then you might have to make do with the table at the back of the restaurant by the kitchen, but it's still worth it - nothing fancy but a good option for mid week dining on a budget.
Gem Restaurant can be found at:
265 Upper St
tel: 020 7 359 0405