If you fancy having a sit-down and doing a bit of people-watching, or topping up your tan in one of London's Royal parks (unlikely in London!), then how how about hiring a deckchair? It's quite a nice way to wile away an hour while having your lunch. Note: Deckchairs are only available between March and October, weather permitting.
The prettiest parks are definitely St. James's Park and Regent's Park, which both have pretty views and some ducks and geese by the water (although St. James's Park is probably the best, as it's more central). They also both have cafes where you can buy a cup of tea. You can hire deckchairs in Hyde Park, Green Park and Kensington Gardens, but they aren't as pretty.
St. James's Park -- the deckchair area can be found on the patch of grass between the Mall and the lake, close to the Inn the Park restaurant. This park is close to Trafalgar Square, Horse Guards Parade and Buckingham Palace, so there are plenty of places to visit afterwards. Maybe you could time it so you can see the Changing the Guard parade beforehand? Read Craig's review of St James's Park, and feel free to ask him some questions.
Regent's Park -- the deckchair area is between the lake and Queen Mary's Gardens. Maybe you can spend the rest of the day at London Zoo? Madame Tussauds and the Sherlock Holmes Museum are only a short walk away. Or how about climbing to the top of Primrose Hill for a fantastic view of London's skyline? Have a read of Craig's review of Regent's Park before you decide, because it has lots of handy info.
Hyde Park -- the deckchairs are on the north and south sides of the Serpentine, and also to the west of Marble Arch. Craig has been to Hyde Park many times, and if you're feeling energetic then you might like a long walk around the lake. You could also drop in at Speakers' Corner and see if there are any speeches taking place.
Green Park -- the deckchairs are in the corner closest to Green Park tube station. This is quite a plain park, and there's not much to see inside (read Craig's review). But it is very close to Buckingham Palace, Apsley House and the posh shops on Piccadilly.
Kensington Gardens -- the deckchairs can be found on the south side of the Round Pond, close to Kensington Palace. The Albert Memorial is worth a look at as well. Read Craig's review of Kensington Gardens for some more picture of the landmarks in the park.
Guest – “What a lovely way to spend a day in the park!”
Craig’s review of St. James’s Park – “The big lake in St. James's Park is famous for its ducks and geese, herons, pelicans and swans... and pigeons, of course. Wherever there is bread, you can bet your life there will be pigeons. And there's definitely a lot of bread on this lake because old ladies are forever throwing it in the water. I'm sitting here watching a flock of birds scrapping and flapping arou… continued”
Sunday football on Hackney Marshes – Every Sun – Hackney Marshes is the home of Sunday league football, with over 70 matches played between dozens of amateur teams.
Listen to a speech at Speakers’ Corner – Every Sun (around noon) – If you visit Speakers' Corner at Sunday lunchtime you can listen to an orator stand up and discuss whatever they like -- all in the name of free speech.
Hire a pedal boat on the Serpentine lake – 1 Apr to 31 Oct 2018 – Spend a pleasant afternoon pedalling around in a little hire boat on the Serpentine, or catch the sun-powered SolarShuttle.
Buckingham Palace Tour, and garden highlights – 23 Jul to 30 Sep 2018 – Why not combine a visit to the Buckingham Palace Summer Opening with a tour of the Queen's gardens as well?
Gun salute to celebrate Prince Charles’ birthday – 14 Nov 2018 – The KTRHA will be firing a 41-gun salute in Green Park to mark Prince Charles' 69th birthday (happy birthday Charlie!
If you enjoy St. James’s Park then you might like to visit Green Park (you can walk it 10 mins), Hyde Park (walk it in 28 mins or catch the tube from St James’s Park to Hyde Park), Kensington Gardens (catch the train from St James’s Park to Kensington Gardens) and Regent’s Park (catch the train from St James’s Park to Regent’s Park)
Disclaimer: Event details can change at short notice and you should reconfirm everything before making plans