what he said
finmding job wise check out
Countryside Jobs Service - welcome. and
Environmental Jobs and Volunteering in the UK these are the main two for most ecology/countryside jobs that get advertised in the uk
other than that i'd suggest that volunteer work in your chosen field is essential and also if you dont have one you must get a driving licence - feild jobs that dont need you to drive are ridiculously rare.
I'd be inclined to leave the masters for now and focus on building up your marketable experience and skills (ballpark for beginer jobs is 6 -12 months experience) - you can come back to the masters through distance learning later in your career if you want and many employers will help pay for it at that stage