Change Groupset

Am considering updating my current SRAM rival groupset on my Boardman Team Carbon. Have seen full Shimano 105 groupset for around £400 which I would consider to be good value to get my bike back to feeling like new.
Is it as easy as swapping and fitting or will some of the 105 not be compatible?
Anyone also have any guidance of likely LBS prices for such an overhaul?
Thanks
Is it as easy as swapping and fitting or will some of the 105 not be compatible?
Anyone also have any guidance of likely LBS prices for such an overhaul?
Thanks
0
Posts
In what way does you bike no longer 'feel like new', if you don't mind me asking?
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Enjoy your current bike and replace parts as they wear out.
There are complications making big changes like whole groupsets - i.e some derailleurs have different clamps/pull to that which the bike may be designed for.
I shall save my money as suggested.
You'll jump back on it'll feel wonderful.
Little things like new bar tape will also make a world of difference.