The first 130mph lap of TT2012 was achieved on the infamous Mountain circuit on Wednesday and inevitably it was 17-times winner John McGuinness who managed the feat.

The Honda TT Legends rider lapped at 130.079mph to up the ante on his second lap, but revealed later he lost around 'five or six seconds' after being held up by some slower riders.

Kiwi Bruce Anstey was hot on his tail though, blazing a trail on the Padgetts Honda Fireblade to lap at an average speed of 129.566mph, less than four seconds slower that the Morecambe star.

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Wilson Craig Honda's Cameron Donald continues to impress on the superbike in particular and his lap of 129.075mph was especially eye-catching considering he recorded the time from a standing start.

The session was cut short at 7.45pm due to mist around the course, which would have prevented the air ambulance from taking off in the event of an accident.

The Sidecar practice session was cancelled as a result.

Not unusually, Tyco Suzuki's Guy Martin has been in the headlines this week after his crash in the Pre-TT Classic Superbike race at Billow nans continued speculation about his future in the Northern Ireland team.

However, the tea-swilling truck mechanic and sometimes television celebrity is gradually increasing the tempo on the GSX-R1000 and produced his best lap of the week so far at 128.866mph to throw his hat into the ring.

Like his Tyco team-mate Conor Cummins, Martin has yet to win at the TT and desperately craves that elusive victory on the Isle of Man.

Bournemouth Pr1mo Kawasaki's James Hillier turned a few heads as he clocked the fifth quickest time at 127.811mph ahead of Ulsterman Michael Dunlop (127.546mph) on the Hunts Motorcycles/McAdoo Honda.

The top ten in the superbike class was rounded out by Dan Stewart (127.453mph), Gary Johnson (127.287mph) and Michael Rutter (127.094mph).

Swan Yamaha's Ian Hutchinson was 11th fastest at 126.760mph.

In the Supersport class, William Dunlop blitzed his rivals with a stunning lap of 126.184mph on Wilson Craig's CBR6000RR.

The 26-year-old was almost 14 seconds ahead of young sibling Michael in second (124.521mph), who has switched to a Yamaha R6 in preference to the Suzuki GSX-R600 he has raced on the roads so far this season.

In the Superstock class, Anstey led the way at 126.075mph from William Dunlop (125.189mph) and Manx rider Dan Kneen (124.830mph).

Honda TT Legends rider Simon Andrews, last year's fastest newcomer at the event, was fourth fastest with a lap at 123.597mph.

George Spence (Guthrie's), Herve Gantner (Joey's) and Steve Mercer (Ballaugh) were all reported as coming off their machines.

Spence was seen by a travelling marshal who reported him to be okay, while Gantner was transferred to Nobles with a leg injury and Mercer was seen by a medic for a hand injury.