How GBP buying actually works
Wise quotes the mid-market rate explicitly with an itemised fee; Revolut and Bunq offer free FX within monthly allowances on their free tiers (typically capped at €1,000) before a 0.5–1% spread applies. Trade Republic doesn't offer manual FX but provides GBP-denominated brokerage if you're buying for investment rather than for spending. Note: 'buying' for spending (multi-currency wallet) and 'buying' for holding (brokerage settlement currency) have very different optimal providers.
Watchouts and hidden costs
Weekend FX markup of 1% on Revolut Standard and similar tiers. Some neobanks (notably consumer-bank challenger products) quote a rate that's 1.5–2% off mid-market — verify against the live mid-market rate on a reference source (Wise's rate page, XE) before committing. For amounts above £85,000, verify FSCS coverage at the destination institution.