You really need to find out what salaries are typically offered in your field (you don't say what that is in your post). Check out a website like
Totaljobs.com and you will get some idea of what is on offer for your field/skillset. Then check out some estate agent sites to get an idea of what your housing costs will be. Only you can decide if a given salary suits your skills, qualifications, and cost of living needs. You might try to get an answer to your question on a site for expats in England as well (an internet search should pull up several options for you).