Paul Hembery says there have been some changes for the better as a result of the tyre crisis that occurred at the British Grand Prix a year ago.

A number of tyres failed during last year's race at Silverstone, with Lewis Hamilton losing the lead as a result while Felipe Massa, Sergio Perez and Jean-Eric Vergne also had spectacular tyre problems. With Pirelli having been unable to make changes to the tyres without the unanimous approval of all the teams prior to that race it proved to be a catalyst for new concessions in the regulations to help deal with similar issues in future.

Asked if the Silverstone race was Pirelli's toughest time in 2013, Hembery replied: "It's a yes and no.

"Unfortunately we got drawn into some team politics during the early part of the season, and that was very difficult because the sport wasn't very well structured at the point. There wasn't a Strategy Group where you could get a balanced point of view between all the parties.

"There were a lot of individuals working with their own objectives, so that meant it was very hard to resolve certain challenges during the year. That has since improved for the better."

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However, despite the improvement in terms of responding to problems, Hembery is still unhappy with certain decisions that F1 has taken with regards to the future.

"There's often a reluctance to not make decisions. That's thing in the sport - it's easier not to decide because nobody gets upset, and nobody risks being disadvantaged. That hasn't changed in many ways. That's something the Strategy Group is trying to resolve, but even then the pace at which they can move is still probably not as quick as what we need for the sport.

"If you look at this year we did get a result in that we went testing in Bahrain with the best of last year's cars, which was a huge step forward. We were in Bahrain earlier this year before we started racing, which enable us to be very well prepared for the season, or at least know where we were going to be when we started racing. We've also had in-season testing with the current cars, which again was a substantial forward from running around with obsolete vehicles.

"So there have been some changes, but unfortunately from our point of view we won't be doing pre-season in hot countries, we'll be back in Europe in the freezing cold and we'll be limited on in-season testing. We've had a glorious year this year and it's been taken away for next year.

"Ultimately we've been primarily been able to do the work for next season anyway. We've got that in the bag and we'll finish that at the coming in-season test (at Silverstone). The majority of the work is already done, so it's not as challenging because the car is remaining the same more or less."