New Bike Advice

Hi I am fairly new to world of bikes and 2 years ago bought a Land Rover Chagin as a starter hybrid style bike.
Now at stage where I can't get anymore than just over 11 mph average on a fairly hilly commute. (Nothing huge)
Bike has starter pack gearing and is now getting to me as all and sundry on droop handle bars go past me like I wasn't there.
I am thinking of getting a new bike (hybrid) and read about Boardman Hybrid Pro Ltd on the site but want to ask if there are others I should look at.
Should I be getting more from theChagin and a new bike won't help
Thanks
Now at stage where I can't get anymore than just over 11 mph average on a fairly hilly commute. (Nothing huge)
Bike has starter pack gearing and is now getting to me as all and sundry on droop handle bars go past me like I wasn't there.
I am thinking of getting a new bike (hybrid) and read about Boardman Hybrid Pro Ltd on the site but want to ask if there are others I should look at.
Should I be getting more from theChagin and a new bike won't help
Thanks
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