Manchester is only about 10% below London, other cities along the M62 are about 15% below according to the salary benchmarking data I've seen. The bigger difference is more in the number and type of available roles.
replyThat salary would be above the median for most perm senior dev positions in London, but still well within the usual range for established tech companies and well-funded startups.
You went from picking the highest salary city...to the second highest paying city. You get how that comes across right?
replyMost of the rest of the north is similar. Darlington's the main outlier, since it's dominated by the public sector.
replyAnd yes, a senior dev will be on half that in the public sector outside London - but only if you exclude the pension.
I don't have figures for anywhere in Cornwall. Is there actually much of a tech industry there?