avard:
Stumbled across your question from July last year today and was a teensy bit surprised that no-one has pointed out to you that flying IMC 5nm east of Sheffield without a radar service is not terribly sensible. See those blue chevrons on the chart, extending to 7nm east of Sheffield? That means there's an instrument approach procedure there in uncontrolled airspace. the procedure may extend a good deal further out than 7nm. The idea of putting those on the map is to try to encourage folks like you not to fly through them.
You can do it at Sheffield now though - the IAPs have been withdrawn.