There are a few things to add to what you good people have already said.
Firstly, be aware of the southern part of the corridor (around Ashcroft Farm/Oulton Park racing circuit) is one of the busiest joining/leaving points for VFR traffic operating through the Liverpool zone.
Secondly, someone mentioned seeing a B747 operating from Manchester while in the corridor. Liverpool controllers will vector traffic for ILS approach to runway 27 800 feet above the corridor. You will at some point have a lovely view of a B737 or A319 or bigger during you travels.
Third, be careful using the M6 southbound. As mentioned before the motorway goes into the Manchester zone fairly soon after you pick it up from Barton.
Finally, and most importantly, if you are unsure of your position or have any worries, TELL A CONTROLLER!! We may be busy but ultimately we are there to help everyone conduct their flights safely.
