How much your favourite items could rise by

How much your favourite items could rise by - as cost of roast dinner could go up by £10

The cost of a pub dinner could increase by nearly £10 over the next 20 years if inflation rises as predicted, according to new research.

The average price for one of the UK's favourite Sunday comfort meals costs around £15.42.

However, over the next 20 years, the pub grub staple could be priced at around £22.46 in 2042.

This would be a rise of around £8 for the cherished pub roast dinner, according to research by credit card brand Aqua.

Aqua used a combination of the Organisation for Economic Co-operation and Development (OECD) inflation forecast and the Bank of England target ongoing inflation rate to make its prediction.

It's very hard to ignore the inflationary price rises seen in the UK over the last year (Getty Images/iStockphoto)

Its research also estimated the potential costs of some other beloved UK items over the next two decades.

Of course, no one knows for sure how inflation will fluctuate over the next few months and years - these are just guesses.

Greggs sausage roll

Over the last few years, the Gregg's sausage roll has been a key item in representing the true impact of inflation.

Currently, the cost of one nation's favourite baked goods is £1.20, after the price was increased by the bakery chain last month.

Aqua research found that based on the predicted yearly inflation rates, Brits could expect to pay £1.94 for the pastry by 2042.

Supermarket meal deal

The supermarket meal deal was another item Aqua looked into as millions chose this option for the lunch every day.

The average cost of a meal deal now is around £3.90.

However by 2041, Aqua estimates the price to rise by around £2.15 taking the cost of lunch to a potential, and astonishing, £6.05.

Yorkshire Tea

Tea bags are another item that has seen a rise in price over the last year with tea-drinkers paying an average of £5.03 for a box of 160 Yorkshire Tea Bags.

With the predicted rate of inflation, Aqua expect the same product will rise to £5.12 by the end of the year.

In 20 years, however, Yorkshire Tea teabags could increase in price to £7.80, increasing the cost of a cuppa by 2p.

Cadbury's Freddo frog

Alongside the Greggs sausage roll, Cadbury's Freddo Frog chocolate bar has been another item used to represent the high inflationary pressures of the UK.

At one point, the chocolate bar cost just 10p from its launch in the 1900's up until 2005, however today a Freddo Frog costs 30p, which some already feel is an extortionate price.

From its research, Aqua believes this nostalgic childhood icon is to cost an extra 17p by 2042, taking the price up to 47p.

This chocolate bar had a price of just 10p in the 1990s when it hit British shelves however, its cost has risen significantly since then (PA)

Bottle of Pimms

Pimms, a favourite for British BBQ season and a staple summertime beverage, is another popular product that Aqua's research shows will become a little pricier in the years to come.

Currently, a 1-litre bottle of Pimms costs an average of £21.75 and by the end of this year, this price is expected to increase to £22.15.

Looking ahead to 20 years from now, we can expect to be paying almost £12.00 extra by 2042, assuming there are no changes to alcohol duty.