The big one is back…

The Big Comp returns to HarroWall for the 6th time on the 21st and 22nd of September, with a single-day format delivering full qualifiers and huge showcase finals at London’s largest bouldering centre!

What’s the deal?

Test yourselves in our all-levels-welcome competition, climb world-class competition blocs, take part in fun challenges and gear raffles. Once qualifying is over, take your seat and watch some of the very best climbers in the UK battle it out for a share of a £7000+ prize pot!

Throughout the day there’ll be qualification climbs, showcase finals, wacky challenges, boot demos, gear giveaways, Arc’Teryx raffle prizes, and big cash prizes!

Qualifying will be split into two sessions and tickets are now available for both of those sessions!

How does it work?

There are two qualifying sessions, with numbers limited on each to ensure a comfortable qualifying environment for all. The first runs from 10am-1pm, the second from 2pm-5pm, with registration for each opening 45 minutes before the session start time.

Finals take place from 6:30pm onwards, with hot food and alcohol available for spectators.

Total Prize Fund

£5,000 cash (including £1000 for 1st place)

£2,000 Arc’Teryx Prizes for raffles

How will it work?

Adults (Age 16+) – 21st September

Morning Session: 10am-1pm

Afternoon Session: 2-5pm

Categories for Open and Women+ competitors

Registration for each round starts 45 minutes before the start time at the front desk. We recommend those aiming for finals to join us for the morning session.

Finals: 6:30-8:30pm

JUNIORS22nd September
Junior Registration + Warm up 10am – 11am
Junior Qualifiers 11am – 2pm
Junior Finals 3:30pm – 5pm

Masters (Age 45+)

Masters are welcome to compete in any of the qualification rounds across the entire weekend, and can choose between competing on either Saturday or Sunday.

However, Masters must choose ONE day only to compete in and cannot return to compete a second day. Masters podiums will take place on Sunday directly before the Junior Finals.


Advance Online Booking

£25 / £22 Concession and LCC Members

Pricing On-The-Day (availability not guaranteed)


Spectator Pricing (for those who aren’t competing)


All competitor tickets include a place at the finals

Pre-booking ends Tuesday 17th September

2023 Revisited with Olympian Toby Roberts