Does anyone know whether, theoretically, you can take a payment holiday on a two year fixed rate mortgage and would there be any penalties? We'd only want a one, maybe two month break.
Unless this is specifically allowed in your agreement you will be classed as 'in arrears'. Most providers will start to take action after 3 months of non-payment so whatever you do don't just decide not to pay for a couple of months. Speak to your provider.
It's worth checking the conditions- some mortgage companies allow holidays, underpayments and overpayments. I think it's less likely to be available on a 2 year mortgage than on a long term mortgage but some allow it- my 3 year mortgage allows it free of charge (other than the accrual of interest for underpayment).