In reply to beagly77:
Simon
In the UK the ethics are solidly set in stone and pegs/bongs etc are not used. The rock here lends itself to kind, non-damaging gear and hammered in gear isn't needed. Routes are graded accordingly. There really isn't much aid climbing here to go at as 99% of old aid routes have been free'd with the exception of cave roof routes. You'd be met with very strong opposition should you use pegs on trad routes.
In winter pegs are used when there is no alternative and only in ice choked cracks where passive gear can't be placed and these are on established winter routes anyway and tend to be the routes you certainly wouldn't want to climb in summer <wet, green gullies for example>
If in any doubt you'll find there is an ethics section at the front of most UK guide books.
Incidently, the essays in the classic rock and hard rock books are very old and from a time before the routes were free'd hence reference to points of aid used. It isn't something to worry about, should you be faced with a crack once used for a peg/aid, a narrow cam can be used instead. clip a sling and stand in that if you can't free the move but pegs are a no-no.