Caterham's Charles Pic went off track early, while Marussia and Williams were also at the wrong end of the timesheets.
Valtteri Bottas: "Conditions were not ideal today, especially as we were trying to test new parts on the car. It's the same for all teams, but I really feel for the fans as they didn't see much running. We managed to test with both the prime and option tyres in the second practice session, so we'll look at the data tonight and assess where we need to improve for the final practice session and qualifying tomorrow."
Pastor Maldonado: "I was running a different programme to Valtteri today, concentrating on mechanical work and tyres. We lost a lot of track time in the first session due to the weather, so we had a busy afternoon. I was also able to do a longer run towards the end as the track dried but we still have work to do to improve the performance for tomorrow."
Jules Bianchi: "It has not been an easy start to the Team's home Grand Prix but we kind of expected these conditions for today. Although we are not expecting any further wet weather during the weekend's running, we have made the best of things and used this opportunity to work on wet set-up generally for future races. I'm looking forward to some dry running now so we can really start to attack the circuit and see what we can do here. It's a fantastic track and it will be nice to get a better taste of that tomorrow."
Max Chilton: "Despite the tricky conditions, it has still been a great day here at Silverstone in front of the home crowd. The good news for them is that the weather looks set to pick up for the remainder of the weekend; but it's a testament to the dedication of the fans that they stick with it, even in the rain. I hope we can reward their support this weekend. The day got off to a slow start which set us back a little in terms of our programme, but we've made some good progress this afternoon, particularly with some more long-range set-up work in the wet. No doubt that will come in handy at a couple of the remaining European rounds. It will be good to tackle the circuit in the dry tomorrow and properly assess how the car will perform here."
Giedo van der Garde: "The morning session was obviously affected by the rain which is a shame, both for the fans who packed out the stands, and for us with the plan we'd set for FP1. We wanted to run through a few aero evaluations, particularly as we have a couple of new updates to the floor here, but with the track as wet as it was, and no sign of the rain stopping, we played it safe in the morning.
"In the afternoon it was much better weather and we had a pretty good session. We had to try and make up some of the time we lost in FP1 and, while we couldn't run the full aero tests, we were still able to make some decent progress throughout the session. The GP2 cars had helped dry the track a bit so we were able to push from the first run and we ended up with a fairly good balance on both compounds. We're seeing a bit too much oversteer on the mediums, especially in the low speed corners, but not in the high speeds - there the car feels balanced and that's positive, something for us to work on tonight."
Charles Pic: "We knew from the forecasts that FP1 would be affected by the weather but it made the whole session pretty worthless. The installation lap was fine but then we waited until about ten minutes to go when there were quite a few other cars on track and unfortunately I went off in the last corner. We obviously didn't lose much time relative to the other cars as everybody had stayed in the garage, and when we got the car back we found everything was ok so it didn't affect our preparations for FP2.
"FP2 was dry, still colder than it looks like it'll be on Saturday or Sunday, but we completed a good number of laps and have a lot to work on tonight. We've found a balance I'm happy with and the grip levels are good from the outlap - we need to work on the low speed traction as we're lacking a bit in that area, but deg levels look manageable, especially with the prime, so overall I think we're going ok here."