Adrian Archibald won two races at the 2003 TT races

The Kiwi was fastest in three categories with his best speed a superb 124.16mph in the Formula One class.

"These speeds augur well for me," said Anstey, who rides for the Ulster-based TAS Suzuki team.

His team-mate Adrian Archibald was fastest in the production 600 class but Robert Dunlop was third behind Chris Palmer and Ian Lougher in the 125s.

Anstey finished just ahead of Ian Lougher and John McGuinness in the Formula One stats.

It was the same top-two in the Production 1000cc with Archibald third fastest.

Anstey also topped the junior 600cc class ahead of John McGuinness and Dubliner Martin Finnegan.

Archibald's top time of 118.08mph put him ahead of Enniskillen rider Richard Britton in the production 600cc class.

Ryan Farquhar managed to get in a few practice laps although a few minor technical problems, meant that he didn't make the top three in any of the categories.

Practice speeds
Formula One
B Anstey 124.16mph, I Lougher 123.96, J McGuinness 122.79
Production
B Anstey 122.57, I Lougher 120.57, A Archibald 119.66
Production 600cc
A Archibald 118.08, R Britton 116.03, T Clucas 115.32
Junior 600cc
B Anstey 121.90, J McGuinness 121.71, M Finnegan 119.67
125cc
C Palmer 108.42, I Lougher 107.33, R Dunlop 107.15

Race schedule

Saturday 5 June
Formula One TT (4 laps); Sidecar TT Race A (3 laps).

Monday 7 June
Lightweight 125cc/400cc TTs (4 laps); Production 1000cc TT (3 laps).

Wednesday 9 June
Junior 600cc TT (4 laps); Sidecar TT Race B (3 laps).