TheBoyNormal rules apply - although sometimes easier said than done:- it's not relevant to a new employer what you earn now, only what the job is worth. Ask what the normal range is for the job, state you exceed the norm in ways a, b & c and ask what salary they have in mind for this level of excellence- nothing wrong with saying you're not going to discuss current salary and then state "the range I am looking for is between £x and £y"- remind them that you are not looking to move to do the same job for 10% more than now but to do the best job for them you can possibly do, in a new role, new challenges, etc. If they say "we'll see it on your P45 anyway", politely agree and stick to silence re current salary- where in any way possible, only negotiate with a person who has the power to say yea or nay or they will side-line you into bureaucracy and you'll end up arguing with someone in HR who doesn't care whether you're recruited or not and has nothing to gain / lose either way. They will then pretend to take your concerns on board and play the double-glazing game of phoning a manager and asking for advice, only to be told that there is no room for manoeuvre- as ever, they are looking to give you the smallest possible salary to get you and keep you motivated for as long as possible and at least until the inertia sets in. It's up to you to demonstrate where that bar liesShould you lie? Probably not - a recent case illustrated that this is not a safe course of action. Can you pretend your entire package is actually your basic? Slightly safer. There are a few imaginative ways to argue (later) that what it says on your P45 is misleading and doesn't tell the whole story.Would they tell the truth if you asked them what was the maximum they could afford to pay for this post? No! Stick to your guns as much as possible and they will respect you for it and remember you.Good luck