Farmers in the UK are trying to prepare for Britain leaving the European Union on 31 October as UK Prime Minister Boris Johnson attempts to reach a deal before the crucial EU summit this week. Half of UK farming income is derived from EU subsidies. A no-deal Brexit will cost British agriculture industry £850 million ($1.1 billion), according to farm business consultancy Anderson.

Uncertainty is the biggest worry for the farmers in Wales. "We don't know where we're going and the longer the uncertainty continues, an industry loses confidence and if you lose confidence in your industry and the business you're running, that's never good." says Welsh farmer Roger Mathias.

Stephen Crabb, British member of parliament for Preseli Pembrokeshire, says the Brexit negotiations have put British agriculture into play as a bargaining tool. "If Brexit goes badly, and by that I mean a messy no-deal scenario, continued argument and acrimony with the EU, a hastily agree trade deal with the Americans and Trump, that's the worst messy outcome," he says.

But some farmers here are pragmatic and upbeat.

"I think with agriculture the trade is always up and down, so there are peaks and dips and rises with market prices anyway." says Farmer Rebecca Stuart. "So, you're not able to predict six months ahead anyway. So, with Brexit and everything going forward, we just have to sail our ship as best we can."

Meurig Raymond former president of the National Farmers' Union, hopes farming isn't the casualty in new trade deals. "Following on from our exit, we will be negotiating trade deals around the world and there is a nervousness that a UK government could easily sacrifice food and farming for other sectors within the economy – and allow substandard food into the UK, at a much lower price," says Raymond.

"We shouldn't forget that most farmers – certainly in Wales – choose to vote for Brexit, so they're owning the decision," says Crabb. "Farmers are still up for this – they know potentially they've made their lives more challenging – but there's a determination also to make this succeed."

With the UK galloping towards Brexit, critics say farming is heading towards the unknown, but supporters say this is an opportunity to reshape Britain's agricultural landscape for the better.