The Hungarian Grand Prix weekend gets under way with Friday morning practice.

We'll be back with second practice from 1pm UK time, so join us then.

The session is over with no further changes in the top order. McLaren begin the weekend well.

The chequered flag out to end the session. Drivers will finish their existing laps.

Maldonado up to 12th. Vettel is 15th and Webber 13th. Most drivers are on medium rubber.

Traffic is a problem on this short 4.381km track as the session ticks away.

Glock also off at turn four. Almost every driver now on the circuit.

Schumacher runs wide but not into the gravel.

Maldonado's Williams back on the circuit following checks related to his gravel trip.

Alonso clocks 1m23.503s to go third fastest.

World champion Vettel, down in 14th, back out after changes to his RB8 set-up.

Alonso fourth and lapping with intent. He is 0.8s off Hamilton. The team have told him to perform a constant-speed test as they evaluate front wing developments.

Rosberg back out while the other top five drivers sit in the garage. /// Rob: "Looks like recent updates have improved the Macs about­ time they were made more competitive, Alonso and his­ luck will now be tested!"

Briton Paul Di Resta unhappy with his Force India. The team work on it after he reported understeer issues.

Button now a tenth behind leader Hamilton after bettering his time to 1m22.922s.

Dani Clos has been off at turn 12 and rejoined while Massa goes ahead of Alonso and into fifth. They are looking at long runs rather than fast laps.

Nico Rosberg now ahead of Mercedes team-mate Schumacher in third with a time of 1m23.628s.

@WilliamsF1Team: "#BOTTAS heads back out - mainly aero evaluation runs & data gathering for us this morning."

@insideferrari: "Felipe is still running, basically doing also more aerodynamic work to do."

Maldonado runs off track at turn 10 and rejoins, albeit through the gravel trap. Those stones can get inside an F1 car and cause problems.

Vettel betters his existing time to 1m24.634s but stays 11th. Webber's Red Bull is being worked on at the front.