We bought our house about a year ago with a 5% deposit for around 175k. After paying some off, we now owe 155k. Recently, we've come into some money and are considering a new house worth around 420k. We're unsure if it makes a difference, but would it be best to pay off our current mortgage, which would cost around 160k including charges, and then sell the house, using the proceeds towards the new one? The house has been valued at 190k after significant work. Alternatively, would it be better to buy the new house outright to secure it and then pay back the bank once our current house sells? We’re new to this, having had a mortgage for only a year, so we’re not sure if one option is much better than the other. Any advice would be greatly appreciated!