London vs Cardiff
Cardiff wins on purchasing power. Cardiff data / business analysts have £80/month more disposable income after rent than their London counterparts.
After paying rent, a data / business analyst in Cardiff retains £80/month more than in London — that's £960/year extra in purchasing power.
London vs Cardiff: what the £80/month gap means for a data / business analyst
On paper, London data / business analyst roles pay £21,000/year more than Cardiff. But take-home after tax and National Insurance tells a different story — London workers keep £3,683/month versus £2,513/month in Cardiff.
The bigger picture is after rent. Average London rent runs £2,150/month versus £900/month in Cardiff. Once housing costs are factored in, Cardiff workers have £1,613/month disposable income versus £1,533/month in London — that is £960/year in real spending power.
Cardiff's rent-to-income ratio of 36% compares favourably to London's 58%.
Cost-of-living equivalence
Based on a cost-of-living index of 100 for London and 64 for Cardiff, a salary of £58,000 in London delivers equivalent purchasing power to £37,100 in Cardiff.
Income retention after all essentials
% of net monthly pay remaining after rent, transport, council tax and groceries
Everyday costs
Estimated typical prices · scaled from Numbeo 2025
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