Lewis Hamilton has revealed that it was he who first planted the seed of chasing after Jenson Button for F1 2010 in the minds of McLaren-Mercedes' management - as he argues that he 'needs' a strong team-mate to help him do battle for the constructors' crown, and expects his compatriot to be 'hard to beat' this year.

After leaving his status as de facto number one at Brawn GP - the outfit with whom he had raced in its varying guises since 2003, and the outfit with whom he swept to world domination in 2009 - to join his countryman at McLaren, many have opined that Button has foolhardily if bravely walked straight into the lion's den in pitting himself directly up against the driver who has all-but made the Woking-based concern his own since debuting in F1 with the team in 2007, who has been supported by McLaren ever since he was first spotted as an eleven-year-old karter back in 1996...and who ominously has never before been beaten by a team-mate over the balance of a season.

What's more, some eyebrows were raised that McLaren had opted to partner up two such fiercely-driven, front-running competitors - and two world champions at that - given the ego-related problems experienced when Hamilton was paired with Fernando Alonso during his rookie campaign in the top flight, and the infamously bitter, acrimonious and ultimately destructive relationship between the late Ayrton Senna and Alain Prost there in the late 1980s.

However, Hamilton has been adamant that he and the team could not have been more welcoming to Button since the Frome-born ace's arrival there late last year - and he has now admitted that the initial idea of recruiting the 2009 title-winner came personally from him, somewhat dispelling theories that the 25-year-old was keen to have a team-mate that he could easily dominate, as had been the case with Heikki Kovalainen over the previous two seasons.

"Something you may not know is that I actually called Martin [Whitmarsh - team principal] and said, 'What about Jenson?'" Hamilton confessed. "That was before they had any negotiations. At the time I was calling them and asking, 'What's going on? I keep reading all these different stories about different drivers. What's happening?' Fortunately, I would be told who they were talking to.

"I had absolutely no input into who they would pick, but I asked if they had spoken to Jenson. Why Jenson? Because there weren't that many drivers the team were able to pick from and he was the best driver available, and they wanted to get the best driver possible. I just wanted to find out because people kept asking me who was going to be my team-mate.

"I was happy with the team-mate I had, but it seemed like they were looking for someone else. I want the best team-mate I can possibly have to score points alongside me. When he's winning I've got to be finishing second, and when I'm winning he's got to be finishing second. I need a team. I can't win the constructors' championship on my own, so I need to have as strong a team-mate as possible.

"You want someone to push you. I had Fernando pushing me in 2007, and at certain points in the year in 2008, I had Heikki [Kovalainen] pushing me. I've no doubts that this year Jenson is going to be hard to beat. His results last year speak for themselves, so in coming here I'm sure he will do a solid job. He is the current reigning world champion, so I personally would never think I could wipe the floor with him."

"As we evaluated the driver market, which we did over a number of weeks, Lewis was consistently positive about Jenson," corroborated Whitmarsh. "As I think has been made clear, they have a high regard for each other and are already getting on well."

Button, for his part, insisted that he had been unaware of his new team-mate championing his cause, and has repeatedly stressed that he only initiated discussions with his new employers once it was clear that there would be no resolution to the prolonged impasse in contract negotiations with Brawn. He did, though, he confessed, speak tentatively with Hamilton himself towards the end of the 2009 campaign - and five days after first visiting McLaren's Surrey headquarters, he was officially announced at the team for 2010.

"We (he and Hamilton) spoke a little bit in Brazil and Abu Dhabi," the 30-year-old confirmed, "but not about me coming here. I just asked him questions about McLaren, but he didn't know why I was asking the questions. I was just interested then - just being nosy really. You are always going to ask people what experiences are like in other teams.

"I didn't think for one second before Brazil that I would be changing teams. I didn't think the option was there, not before I won the title, and just never thought about it - but obviously your mindset changes when you win something you have worked so hard for. Then you look for other challenges."

Whilst the duo were all smiles at the Newbury launch of the new MP4-25 last week, however, it has been speculated that tension is already brewing behind-the-scenes. Hamilton was noticeably and unusually abrupt in some of his answers to questions, ostensibly uncomfortable with the British media spotlight - for the first time in his F1 history with McLaren - being focussed on somebody else, the driver who now has the coveted number one on his car rather than on his own, and the country's new 'golden boy'.

There is also a school of thought that another motive behind Button's recruitment was to try to limit the burgeoning influence of Hamilton's father and manager Anthony inside the team, and it was noted that whilst Button Snr was present and highly visible at the launch, Hamilton Snr was nowhere to be seen, absent for the first time as he unveiled his new GP Prep Drivers Academy initiative. An interesting season ahead certainly looks in-store.