At the very least, call the nearest unit who could provide you with a FIS, even though 99 times out of 100 they may sound disinterested, you can guarantee that on the other occasion, your call will solve the mystery for them, and the ATCO involved will give a big sigh of relief. It's good practice to call, and if you fall out of the habit of following "good practice", it may all end in tears.
BTW, next time, go up the east side of Brum, the guys at Cov will give you a FIS, sometimes up as far as Lichfield. And they're better than many.
