During my PPL training, I used to fly cross-countries on FS2000. In those days the quality of the scenery was crap, but it was vastly better than nothing. Whether this actually helped I can't say; all the waypoints were chosen to be utterly obvious (like Bewlwater).
The OP's proposed route is not quite so simple to navigate visually because what whole area is densely built-up and is a mess of similar landmarks. Many roads, motorways, etc.
Huge numbers of people bust controlled airspace around there each year, which is why the funding for Farnborough not only continues but the service has expanded.
Anybody not using a GPS is just making their life pointlessly hard.