Rain played havoc with opening practice at the 2013 British Formula 1 with only half of the grid posting a timed lap and most of the leading drivers remaining in their garages.Daniel Ricciardo, eager to show Red Bull bosses what he can do now that there is a declared vacancy at the champions with Mark Webber departing in 2014, was top of the timesheets for Toro Rosso after completing 10 laps.His best time of 1mim54.249 may have been so slow as to be meaningless but at least he gave the long-suffering fans something to watch on a morning short of track action.NO LAPS FOR TOP TRIORed Bull, Lotus and McLaren drivers did no more than installation laps. Lotus's Kimi Raikkonen did not bother even with that.Red Bull's Sebastian Vettel said: "Bit scary on the straight. Quite a lot of water on the track.McLaren's Jenson Button, who has yet to stand on his home grand prix podium, said: "There isn't much point heading out at the moment. "I think we need to apologise to the fans but for us it is really wet out there and it is going to be dry at the weekend, so it is more a risk than anything else. We have some new parts and with standing water it is pretty easy to hit the wall and damage those parts."Ricciardo was the first to set a time, some 15 minutes before the end of the session, and 10 others followed his example.Sauber's Nico Hulkenberg was second on the timesheets with Williams' Pastor Maldonado third and Lewis Hamilton fourth for Mercedes.Caterham's Charles Pic provided the only flicker of drama when he skidded off the slippery surface and into the tyre wall at Club corner, smashing the front wing.The poor weather meant hopes were dashed of fans seeing five British drivers on track. Force India abandoned its plans to run their simulator tester James Rossiter instead of drian Sutil.With no meaningful data to be gained from running, the Force India based team kept their cars in the garage. 2013 British Grand Prix: First practice1 Daniel Ricciardo (Australia) Toro Rosso 1min54.249 2 Nico Huelkenberg (Germany) Sauber 1min55.033 3 Pastor Maldonado (Venezuela) Williams 1min55.354 4 Lewis Hamilton (Britain) Mercedes 1min55.458 5 Esteban Gutierrez (Mexico) Sauber 1min55.825 6 Valtteri Bottas (Finland) Williams 1min56.361 7 Jean-Eric Vergne (France) Toro Rosso 1min57.891 8 Giedo van der Garde (Netherlands) Caterham 1min58.859 9 Max Chilton (Britain) Marussia 1min59.719 10 Jules Bianchi (France) Marussia 1min59.876 11 Felipe Massa (Brazil) Ferrari 2min06.534 12 Nico Rosberg (Germany) Mercedes n/a13 Paul Di Resta (Britain) Force India n/a14 Jenson Button (Britain) McLaren n/a15 Romain Grosjean (France) Lotus n/a16 Adrian Sutil (Germany) Force India n/a17 Fernando Alonso (Spain) Ferrari n/a18 Mark Webber (Australia) RedBull n/a19 Sergio Perez (Mexico) McLaren n/a20 Charles Pic (France) Caterham n/a21 Sebastian Vettel (Germany) Red Bull n/a22 Kimi Raikkonen (Finland) Lotus n/aStay with Wheels24 for the 2013 British GP weekend.