Exterion Media, in association with Campaign, are celebrating Year of the Bus by launching The Big Bus Challenge. Your brand can be the centre of attention and be seen by 30 million people every week.

We're laying down a challenge to every advertiser, agency, and creative out there: show off your skills with some brilliant Bus advertising designs – and you could win yourselves a national or regional campaign, along with personal prizes for the winning teams.

It's free to enter and you can submit as many entries as you like.