MOCK The Week regular faces Tiff Stevenson and Ed Gamble form a "unique comedy double bill" at Selby Town Hall tomorrow and face a dilemma before the show starts.

"Tiff and Ed are touring their own hit shows around the country, but Selby is the only place this year where you can see both of them performing on the same bill," reveals Chris Jones, Selby Town Council's arts officer. "Both are real rising stars and look set for plenty more TV and much bigger venues in the future."

More immediately, however, who will be going on stage first, Tiff? "Ah, good question! We'll flip a coin probably, or maybe have a full-on fist fight...or a mud wrestle!" she says.

York Press:

...will Ed Gamble be the Edliner?

"Ed's doing a bit of a tour, I'm doing a bit of a tour, and for this show in Selby we'll do an hour each, like in Edinburgh, where I saw his show and he saw mine."

What did you think of Ed's Stampede show, Tiff? "It was great. I loved it," she says. No hints of any rivalry there, so let's move on swiftly to Tiff's show, Seven, so named because "when you have to come up with a name in January for an August show at the Fringe, it was going to be my seventh one-hour show". Seven it is then, and Tiff had another reason too for the number seven being in her head.

"I'd been exploring the Seven Deadly Sins and then I thought of writing seven tweets after the Paris [terrorist] attacks," she says. "I'd been in Paris five weeks earlier and had been having a drink with Josh Homme, from Eagles Of Death Metal: the band who played on the night of the Balaclan theatre mass shooting, though Josh wasn't with them the night it happened.

"I was thinking, 'Did everyone feel close to it?', as I couldn't quite find the right thing to tweet about it without it being about me. It's the sort of flashpoint where you're reaching for reason, but that space for nuanced reflection and reason has gone and now we just have polarised responses. But I feel one of the jobs of a stand-up is to respond when it's happening."

Tiff has made her mark with her regular role as Tanya in three series of BBC3's People Just Do Nothing and runs the weekly Old Rope event every Monday in London for established comics to try out new material. Her own work is noted for its honesty, whether she is playing Edinburgh, touring solo or supporting Irishman Ed Byrne, as she did earlier this year.

"I believe in sticking to my beliefs," she says. "We're getting to the point where politicians are lying so much that people are looking to comedians to say something, to tell the truth, and I think comedians should do that with a wide range of opinions."

In her own case that means reacting to what's going and updating her material as the tour progresses. "I think I've cultivated a smart, friendly audience who have an idea of the stuff I'll be doing; they know there'll be some edgy stuff that pushes at your sensibilities, provoking not only laughter, but more than that as I like to kick up dust about an issue to get them thinking."

Whether she will do that before or after Ed Gamble's set tomorrow, let the coin toss decide.

Tiff Stevenson and Ed Gamble, Selby Town Hall, Sunday, October 23, 8pm. Tickets: £13 on 01757 708449 or at selbytownhall.co.uk or £15 on the door from 7.30pm.