Why does Simon Cowell and Gordon Ramsay have similar accents?

I know there’s regions of Great Britain just like the United States that have different accents like I claim to it not have an accent but I’m pretty sure I do have an accent even though I don’t recognize it.

Side question can you tell when somebody is from Seattle or the Northwest? not being said and asked I’m pretty sure Gordon Ramsay and Simon Cowell are from completely different places of Britannia. so why are their accents so similar?

Why does Simon Cowell and Gordon Ramsay have similar accents?
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