Hello and welcome to our live coverage from free practice 1 for the Canadian Grand Prix in Montreal.

And that’s the end of the session. Hamilton quickest from Vettel, Rosberg, Alonso and Webber. Join us at 19.00 BST for the second session.

Vettel improves to third on the super softs.

Webber jumps to fourth but is quickly displaced by Alonso. Lots of changes in the final moments of the session.

Hamilton still quickest forom Rosberg and Alonso as Perez has an excursion at turn one.

Webber, Vettel and Schumacher also trying out the super softs.

Rosberg out on the super softs.

It has been confirmed that Button is suffering from an oil leak.

Kobayashi goes fourth fastest with a 1:16.000.

Button has sat in the McLaren garage for some time, his mechanics working on his gearbox and rear wing.

Vettel goes fourth fastest and only four tenths separate the top four drivers.

Alonso struggling a bit, locking up into the hairpin. He recovers to go third fastest.

Vettel goes off across the grass at turn 9.

Rosberg briefly goes quickest with a 1:15.782 but Hamilton betters the mark with a 1:15.564.

Only Button and Kovalainen are in the pits.

Hamilton has a brief off track excursion at turn two but continues.

Both Lotus drivers and Karthikeyan now on the super softs.

Ferrari are making changes to Massa’s exhaust layout.

Kimi Raikkonen has decided to buck the trend and experiment on the super soft tyres. An indication that heavier rain is imminent. Schumacher follows suit.

The session is underway again and Alonso leads the cars out.

The session will shortly be underway again.