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Food and drink prices are set to soar under even the best potential Brexit outcome, a secret study reveals.

The Brexit Committee has released the EU Exit Analysis – Cross Whitehall Briefing six weeks after parts were leaked.

It predicts non-tariff barriers would raise prices 8% to 17%, depending on whether we fell under European Economic Area rules, a free trade pact or World Trade Organisation terms.

Tim Rycroft, of the Food and Drink Federation, said: “The findings show food and drink would be worse off in every scenario – faring the worst under WTO terms.”

Labour MP Stephen Doughty said: “The papers show how disastrous this Tory hard Brexit will be. Staying in the single market and a customs union is the least worst option but we lose out every way.”

Campaigners say the file shows ministers will need to borrow £55billion a year extra in 2033-34 compared with if we stay. However, critics said Government forecasts are

notoriously unreliable, even in the short-term.

Meanwhile, European Council President Donald Tusk dashed Chancellor Philip Hammond’s hopes for a free trade agreement covering financial services. He warned any deal will not offer the same access for services as for goods.

What prices could be

Stella Artois Lager 4x568ml - Current: £5.50; WTO: £6.44; Free trade-style agreement: £6.27; EEA: £5.94

PG Tips Pyramid 240 Tea Bags - Current: £4; WTO: £4.68 Free trade-style agreement: £4.56; EEA: £4.32

Tropicana Orange Juice Smooth 1.5l - Current: £2; WTO: £2.34; Free trade-style agreement: £2.28; EEA: £2.16

Richmond 12 Thick Pork Sausages - Current: £3.20; WTO: £3.74; Free trade-style agreement: £3.65; EEA: £3.46

Twelve unsmoked Back Bacon Rashers - Current: £2.15 WTO: £2.52; Free trade-style agreement: £2.45; EEA: £2.32

Six eggs - Current: 70p; WTO: 82p; Free trade-style agreement: 80p; EEA: 76p

Mars chocolate bar - Current: 60p; WTO: 70p; Free trade-style agreement: 68p; EEA: 65p

Flora Buttery Spread 1kg - Current: £2; WTO: 2.34; Free trade-style agreement: £2.28; EEA: £2.16

Dairylea Cheese Triangles 270g - Current: £2.17; WTO: £2.54; Free trade-style agreement: £2.47; EEA: £2.34

Goodfellas Pepperoni Thin Pizza - Current: £1.50; WTO: £1.76; Free trade-style agreement: £1.71; EEA: £1.62

Nescafe Original Instant 300g Coffee - Current: £5; WTO: £5.85; Free trade-style agreement: £5.70; EEA: £5.40

Four Pink Lady Apples - Current: £1.50; WTO: £1.76’ Free trade-style agreement: £1.71; EEA: £1.62