Are you moving I assume? GHS girls live in Guildford, Godalming, Farnham, Haslemere, Camberley, Surbiton, Esher, Claygate, Cobham, Worplesdon, Woking, Shalford, Horsley so a very wide area. Most come on train to London Road Station.
My DD was at GHS and had a wonderful education there. She is in her twenties now and a well-rounded, ambitious girl who is very close to her GHS friends still - they are all fun-loving, very successful so far in their careers, down-to-earth and caring.
GHS is great for academic girls who suit the environment of being among many other very bright girls. My DD is the type who elsewhere would have sunk and I can imagine not have pushed herself, at GHS she thrived in the atmosphere that everyone works hard and it is not uncool to be trying your best (but they also have a lot of fun and it is a very supportive school. I have seen DD and her friends have been left with an incredible work ethos which has helped them really thrive at uni and in the workplace.
It can be thought of as pushy, mainly because people think how can a school with such high results not be pushy but in my experience any pushiness comes from parents - not the school. They are very selective and so their job it just to provide an appropriate education to bring the best out of their intake and provide a rounded education, rather than to micro-manage them to achieve. They take in the type of girls who have very good potential so pushing isn't really necessary.
There is a lot of fun as well as work, loads of extracurricular on offer to suit all types. I remember DD saying there was a lot of acceptance of differences in her year group and by sixth form her year were very close and really celebrated others' achievements. It is (or was anyway) a place where all 'types' of girls - sporty, very confident, musical, drama, arty, quiet, book-lovers - thrived and were valued. I know for DD it was certainly somewhere she was very happy and she really liked and valued her teachers.
My niece is there now and seems equally happy. She is very quiet but seems to have a lovely group of similar friends and be doing well. I'm sure it has changed and evolved since DD was there - they all have their own iPads provided by the school now.
Of course, it is not a perfect school but I don't think any school is. It's faults were pretty minor.
Perhaps someone with a DD currently there will come along but I hope this helps.