Santander loosens affordability rules for borrowers in big mortgage shake-up / Reeves urges regulators to ease mortgage rules for first time buyers / Canada's new mortgage and down payment rules come into effect today. Here's what you need to know / Bank of Canada official warns about dangers of 'tinkering' with mortgage rules / How long should you fix your mortgage? - Darcy Ungaro / Labour makes 'permanent' mortgage guarantee pledge to entice first-time buyers / Mortgage with £5,000 deposit and £500k limit launched - but there are some restrictions