i really think meaker deserves a go soon, he has pace and could add something to their attack.Yeah but England are playing what they consider 20/20 specialist bowlers, most of these blokes are nowhere near Test selection.
I'm assuming you're talking more about Tests when you talk about depth and England's is reasonably good, no country is going to have a heap of bowlers outside the main 4 or 5 who can walk into the Test side and do a decent job but England have Anderson, Broad, Finn (with Swann) as the first choice attack, all reasonably proven Test bowlers then they have Bresnan, Tremlett and Onions who have all perfromed well more often than not in Test cricket.
Then there are the unproven ones behind that who may or may not prove to be decent Test players, they're unproven because England's quicks have kept reasonably fit and also kept their places so nobody has needed to be rushed in.