To make sure a position will be the right move for you, take the time to understand the new company - How will you fit in? Does it share your ethos? - and consider the colleagues you will be working with.
Many interviews start before you even reach the interview room; perception is everything, from the moment you smile at the receptionist to announce your arrival to the minute you leave the building.
Look for more than the basic
Do you just focus on the basic salary when considering a move? The 'Sign up for as many perks as possible' article in the Times discusses why you should think about additional benefits before accepting an offer.
You might ask about the pension but what about child care vouchers or dental cover? How much would you need to earn to take out your own medical insurance? Depending on the stage of your career, you may think it worth accepting a lower salary to join a company with excellent training opportunities or one that will sponsor professional qualifications.