John Leask & Son currently operate the following mainline local bus services on behalf of Shetland Islands Council:
- Route 6. Lerwick to Sumburgh Airport via Sandwick
- Route 23. Lerwick to Mossbank and Toft Ferry ( for Yell, Unst and Fetlar) via Brae.
- Route 1/3. Lerwick Town Service
- Route 19, Lerwick to Laxo Ferry (for Whalsay) and Vidlin.
Route 41. Bressay to Lerwick Shopper Service.
All services are operated by low floor wheelchair accessible buses.
In addition John Leask & Son operate a Mini Bus feeder link between Scalloway and Burra Isle (Route 5) which connects with the Lerwick to Scalloway mainline service (Route 4)
All timetables can be found on the following website: travel.shetland.org