Nice bar, a welcome change from the other soulless bars on the high street.
2 for 1 Mojito's made it hard for us to leave when we came to the open mic night.
The place was a bit hard to find though, which could be a good thing I suppose.

Nice venue, good selection of beers, dj's on fridays and weekends playing a good selection of music, live bands / acoustic nights in the week .....all in all well worth a venture and a hidden gem.
Check it out there is always loads going on, nice people, friendly atmosphere.

Highly recommend.

Although located within 2 minutes walk of Clapham North tube, Arch 635 is just out of sight from the high street, hence their claim to being “South London’s best-kept secret”. Arch 635 is striking on arrival - a converted railway arch – and has a friendly atmosphere which is local without being exclusive. Arriving at the bar things get even better. Arch 635 has micro-brewed Meantime Beers on draught, and a great range of bottles (in addition to spirits, wines etc). For entertainment, this bar has a range of music events. Notably, the biweekly open mic night brings in a high standard of musicians with a friendly atmosphere. Overall, I think this pub has great claim to being the best in the area – it certainly has my vote.

This is a great place to drink. Everytime i have been there i have had such a great time. Everyone seems to be really chilled out and friendly. The is not pretension like in some of the other Clapham bars, here you just get really cool music and a great vibe. One of Clapham's best kept secrets......oh and friendly owners too!

I stumbled Arch 635 with a friend and ended up having a brill time. Arch 635 is an intimitate venue with a great DJ and most importantly, enough room to do your thing on the dancefloor without getting trampled on!

Apparently you can't take photos in Arch 635! I went for my birthday this weekend with a big group of friends - some of which I haven't seen in ages and the bouncer stopped us from taking photographs saying that it wasn't allowed but wouldn't say why! He eventually agreed to let me take just one photograph (yup, just the one!). His attitude really let the bar down! Arch 635 is a cool bar with great music. Pity about the policies!

Arch 635 is possibly the best late bar in Clapham. Nice venue, good crowd, funky music and pleasant bar staff. I've never had a bad night in Arch 635.

Arch 635 is a great little bar hidden from the glaringly obvious (and often hideous) Infernos, meaning the crowd is chilled and not cheesy! There is no door charge which makes this place even more appealing and although the bar at Arch 635 is quite small, it does get quite crowded at weekends. Music is a mix of funky house and soul classics. It's a good little find and we have had many a good night there.