The social on Friday 20th:

meet from 5:30pm onwards at the cafe by the National Film Theatre on the South Bank (chosen because you can get a large plate of decent grub for £6-£8) and also peruse the second hand bookstall nearby. I will get there and baggsie a table; other people can turn up as &when. It does take about 10mins to get served food though. Nearest tubes Embankment or Waterloo.

At about 7:10 those congregated will wander eastwards along the south bank towards the TATE MODERN (not the Tate Britain).

At 7:30pm meet in the turbine hall of the Tate Modern. Nearest tubes St Pauls, London Bridge, Blackfriars) Then we decide what to see.
There are three main options -
1) the Flischer and Wiess exhibition of upside-down chairs and other such nonsense. Tickets cost £7 (combined ticket with the David Smith exhibition £10) group tickets £6 but there needs to be 10 of us and booked in advance....
2) the normal, permanent galleries - including such favourites as Roy Litchtenstein's big cartoony things. These are FREE.
3) the UBS photography exhibition. This is also FREE.

The Tate is open till 10pm but the paying exhibitions only let you in until 9/9.15pm.

and then there are the slides.... there are slides down to the turbine hall floor from floors 2, 3, 4, and 5. Sliding down from floors 3, 4, 5 you need to get a timed ticket from the ticket office in the turbine hall. sliding from floor 2 doesn't need a timed ticket but the queues are longer. I just liked standing around and hearing the screams. Going on the slides is FREE.

The restaurant on the top floor (floor 7) of the tate has fantastic views over the Thames & would be a good place to chill later on (after 8-9pm when the crowds are dying down)