I reckon this is a good salary for a teacher in the UK, as you will discover by checking this site or any others on the net:

http://www.tes.co.uk/salarySearch.aspx?

However, with accommodation thrown in, it sounds rather too good to be true. Many teachers earn around 2,500 per month and I would say that a salary like this would appeal to a lot of teachers living and working in London already. Unless of course you are to work in one of the more difficult schools, where let's face it, you will find the work extremely hard going or if you have some really sort after skills which are hard to find within the local pool.

All in all, life in the UK is very expensive indeed. If your partner is lucky enough to find a job, things will be much easier. Failing that, I would budget for about 80% of your salary to cover absolute essentials.

Good luck anyway and go discover the UK!