In pictures: Great British Beer Festival

1 of 9 The world's biggest real ale festival is currently on at Olympia in London. (Photos: Phil Coomes)

2 of 9 More than one and a half pints are served every second from the 700 ales and ciders available...

3 of 9 ...though it's not just beer on offer, you can pick up everything from a beer mat to a pump from the brewery of your choice.

4 of 9 First timer Nick Morys says: "It's great fun and very welcoming. I've tried six beers so far, halves mind you!"

5 of 9 The Campaign for Real Ale is looking to attract new drinkers...

6 of 9 ..."It's far more accommodating for women now; they have good facilities for the children so the parents can go and try a beer or two" say Jan, Collette and Hannah.

7 of 9 Samantha and Johanna from the US thought they'd try a Liverpool Brewery. "We like their music so figured we'd like the beer."

8 of 9 The ales on offer include local brews, such as the St Austell Brewery which is promoting its Tribute Beer.

9 of 9 With the weather set to stay hot for a while, there are worse ways to spend a day than sampling a pint or two.