Williamson questioned Hibs' desire to keep him

The 42-year-old former Hibernian chief was unveiled on Tuesday as the successor to Paul Sturrock who is now boss of Southampton.

"It's a great place to be," Williamson told the club's official website,

"It was a big decision to leave Hibernian, but this is a club which is moving forward. We are on the verge of promotion."

Plymouth will be promoted to Division One if they beat QPR at home on Saturday.

"I've been keeping an eye on things down here and been very envious of what Paul (Sturrock) has achieved, and I'm delighted to be here," added Williamson.

"I spoke to the board last week and I was very impressed with what they had to tell me, so it wasn't so difficult to make the journey from north of the border to south."

Sturrock left Home Park in March to join Southampton and Williamson has been linked with the vacancy ever since.

Hibs interest Robertson

Inverness Caledonian Thistle's John Robertson, Clyde's Alan Kernaghan, Motherwell's Terry Butcher and Livingston's Davie Hay are already being tipped as candidates as Williamson's replacement.

Williamson was reportedly recommended by Sturrock following the former Dundee United boss's move to Southampton in March.

The Hibs boss insisted all week that he did not want to leave Easter Road but stressed: "It may be an indication that Hibs are prepared to let me go that they let me speak to them."

He pointed out that Hibs' decision earlier in the season to reduce his wages and tear up his five-year contract was a factor in his thinking.

Argyle chairman Paul Stapleton did not announce Sturrock's successor immediately, and last week Colin Lee was sacked by Walsall after he attended an interview with Plymouth.

"I feel sorry for Colin Lee," said Stapleton. "He is a good guy and has been treated shabbily by Walsall."