Buying a house and new job

So we got an offer accepted on a house, and just my luck I got made redundant.

I have already found a new permanent job, similar salary (I was 56k, will be on 53k in new job as theres no london weighting) that I will start literally the day after my last day at my current place, so no gap in employment. I will also NOT be on a probation period, due to the nature of the work. The salary drop also would no effect mortgage repayments.

Im obviously going to declare it when i have my contract/ proof, but feel so sick our mortgage will be withdrawn. Its probably come at the best time, as since the offer, nothing has really moved so im hoping we could still just get another mortgage if this one pulls out.

Anyone been through this?