This was a work I made about the Unionists in Belfast when we were filming 'Who Are You?' It was tricky as their identity is a naturally touchy subject int he context of Irish politics. Yet there was, for me, also something slightly farcical about their version of Britain - a holding-out for an imaginary past golden age, a dour, bowler-hatted, flag-waving, shipbuilding, postwar Britain.

We went to a march during the filming. I twas very nostalgic, celebrating the 100th anniversary of the Ulster Volunteer Forces. I was thinking about the banners we saw, and also about the 1950s advertising, that sort of 'cocoa and twist', as Philip Larkin put it. I wanted my banner to look like one of those tin-plate adverts that you used to see outside grocers' and corner shops, or a poster for the 'golden age of rayon'.

The five Unionists we interviewed are all riding this horse, which is a reference to Kill Billy, who you see in a lot of Unionist graffiti - those gable-end murals around Belfast. They're carrying a slightly moth-eaten Union Jack, and the horse looks like it's not the sharpest tool in the box. In the background there's a sunset, and you can just see the silhouettes of two big cranes and the Titanic riding into the sunset, iconic symbols of Belfast. The banner was commissioned to be sewn in India in a workshop there. It's amazing work, with the entire surface hand-embroidered: quite an exquisite thing for a jokey sort of image.

Grayson Perry