The real cost of settling in London (what nobody adds up)

The move-in stack (illustrated on a £1,800/month flat)

The monthly rent is the number everyone fixates on. The number that actually catches people out is the cash needed before you hold the keys. On a £1,800/month flat:

• Security deposit — £2,077 (5 weeks’ rent, the legal cap). Refundable, and must be protected within 30 days in one of the three government-approved schemes: TDS, DPS or myDeposits — ask which one and keep the reference number, you’ll need it to get the money back.
• First month’s rent — £1,800, paid in advance.
• Holding deposit — up to £415 (1 week) to reserve the place; it’s then credited toward your rent or deposit.

That’s roughly £3,877 before you move in — and more if you offer several months’ rent in advance to offset having no UK credit history (a common lever; see our guide on renting without a UK record). These figures scale with your rent, but the structure doesn’t change.

The forgotten first-month costs

• Furniture & basics if unfurnished or part-furnished — easily several hundred pounds.
• Council tax — varies by borough and property band; a real monthly line, not an afterthought.
• Utilities — energy, water, broadband, often with setup steps.
• Transport — a contactless/Oyster pay-as-you-go habit adds up; weekly/monthly caps help.
• Phone / SIM — a UK number unlocks a lot of admin.
• TV Licence — £180/year, a genuinely surprising one for French movers: watching live TV on any channel, or using BBC iPlayer, is against the law without it. It funds the BBC and there’s no equivalent to the French redevance audiovisuelle in scale or enforcement — inspectors do follow up.

One more line to plan for if you have no UK credit history: many landlords ask for a guarantor — someone UK-resident, earning around 2–3× the annual rent, with a clean credit record, who’ll cover the rent if you can’t. Living abroad disqualifies a guarantor, which is exactly the trap most new arrivals hit. See our guide on renting without a UK credit history for the workarounds (rent in advance, guarantor services, employer references).

The income-gap trap

Here’s the cost almost nobody plans for: your first UK salary may not arrive until the end of your first month, sometimes later. Meanwhile rent, deposit and daily life are all going out. The buffer to bridge that gap — typically several weeks of living costs — is the single most important number to get right, and the one people most often miss.

Common mistakes

• Budgeting the monthly rent but not the upfront stack.
• Forgetting council tax and utilities as ongoing costs.
• Ignoring the income gap before the first UK pay.
• Not knowing the deposit cap, and overpaying.
• Assuming a family member abroad can be your guarantor — they can’t.
• Watching live TV or iPlayer without a TV Licence, assuming nobody checks.

Your real budget — a preview, not the spreadsheet

The principle: add the move-in stack, the first-month extras and an income-gap buffer on top of the rent. What we don’t do here is hand you a generic spreadsheet — because the number that matters is yours, built from your salary, your area and your situation, and kept up to date as your plan firms up. That’s what Veia builds, alongside the Salary Translator.