Preserved locomotives fitted with the mandatory electronic equipment are allowed to operate on the national mainline. Currently there is one Class 40, five Class 50s and two Class 55 locomotives so equipped.

Since returning to the mainline these have all seen use on many railtours and land cruises for a variety of train operators. Destinations for these tours have been varied. The locomotives have revisited their old stamping grounds as well as places never frequented by the three classes such as Wick and Thurso in the far north of Scotland.

2017 The Caledonian

2017 The Caledonian

2017 The Torbay & Dart Explorer

2017 The Torbay & Dart Explorer

2016 The East Lancs Firebrand

2016 The East Lancs Firebrand

2016 The Purbeck & Bomo Explorer

2016 The Purbeck & Bomo Explorer

2012 GBRf Charity Special

2012 GBRf Charity Special

2011 The Edinburgh Explorer II

2011 The Edinburgh Explorer II

2011 The Snowdon Ranger

2011 The Snowdon Ranger

2011 The Devonian

2011 The Devonian

2011 The Royal Scots Grey

2011 The Royal Scots Grey

2009 The Cambrian Mountaineer

2009 The Cambrian Mountaineer

2008 Minehead & West Somerset Railway

2008 Minehead & West Somerset Railway

2008 The Purbeck & Weymouth Explorer

2008 The Purbeck & Weymouth Explorer

2007 The Lincoln Marketeer

2007 The Lincoln Marketeer

2007 Airbourne Eastbourne

2007 Airbourne Eastbourne

2007 The Bristol Coal-Stone Haul

2007 The Bristol Coal-Stone Haul

2007 The Pompey-Vectis Explorer

2007 The Pompey-Vectis Explorer

2006 The Airean Raider

2006 The Airean Raider

2006 The Orcadian

2006 The Orcadian

2006 The Redmire Rambler

2006 The Redmire Rambler

2005 The Devonshire Riviera Express

2005 The Devonshire Riviera Express

2005 The Pixies Revenge

2005 The Pixies Revenge

2005 The West Somerset Wanderer

2005 The West Somerset Wanderer

2005 The Monarch Of The Glen

2005 The Monarch Of The Glen

2004 The Yorkshire Royale

2004 The Yorkshire Royale