Bear in mind that there will be consequences to leaving this far through your course. The main one is that you won't have enough Student Finance entitlement to do a new degree from scratch in the future. You will have to fund the first year of any future degree by yourself, with Student Finance only kicking in for the remainder of the course after that.
If you leave before the end of the second year, you will have to repay some of your Student Finance loans immediately, even if you've aleady spent it on things like rent. Plus you need to check your rental contract, as most will legally oblige you to pay rent for the duration of the contract - even when you no longer live there, And if you decide to stay in the house after you leave uni, there will be Council Tax to pay on top of rent.
It's probably best from a purely financial point of view, if you can hang in until the end of your second year, and inform the uni that you're leaving as close to the start of your third year as possible. That way, the immediate SF repayment will be minimal.
Be aware that walking away with an interim qualificaion - if your uni offers them - may impact your future SF entitlemet further. If you pass your second year and your uni offers you a DipHE, then in future you would have to self-fund the first *two* years of a new degree due to the ELQ (Equivalent or Lower Qualification) rules.