yes 3rd year. The reason I use final year is because it is the final year of my funding, with no possible extension after the end of August. I'll try my best to finish writing up by then, but it looks like an impossible task.
Yes, research council deadlines have passed, but universities still advertise their departmental funding, or funding secured from HEFCE etc.
Whatever you end up doing, good luck with your work. You can always try raising some money from other charitable organisations and your department once you start your MRes.