http://news.bbc.co.uk/1/hi/england/default.stm
BBC seems to be reasonably accurate
I saw it making a turn towards Wallasey just after the incident and it was quite low ( probably less than 1000 feet )
Heard the whole incident from Mayday call which was very early after take off
to the successful return, all very calm and collected by all involved
(probably bit of a sweat in cockpit but to be expected as they would have been very busy )
Ian