THE Caledonian MacBrayne ferry Isle of Lewis, whose absence from the Ullapool to Stornoway route since April 19 has caused disruption throughout the CalMac network, will be back in service this morning, four days earlier than expected.

She had been withdrawn for repairs which highlighted the loss of CalMac's main backup vessel, the Claymore, which it had been forced to sell by former Secretary of State Michael Forsyth to the private operator of the new Campbeltown to Antrim service last year.

A CalMac spokesman said last night: ''The return of the Isle of Lewis in time for the 0930 from Ullapool on Thursday, means the Oban to Craignure and Mallaig to Armadale services will be back to normal first thing Friday.''