Buy-to-letMortgagesNews TMW extends selected end dates and raises Guarantor tracker rates By Kevin Rose - 18 July 2012 0 624 FacebookTwitterLinkedin The Mortgage Works (TMW) has extended end dates on all buy-to-let and Guarantor products. The Nationwide Building Society brand has also increased by 0.10 percentage points. TMW said no other products will be affected by these changes.