For CS2 betting sites that are licensed for Great Britain, focus on operators holding a UK Gambling Commission (UKGC) remote betting licence and, if they offer mini‑games such as crash/roulette, a remote casino licence as well. In practical terms, that means established GB brands like Bet365, Betway, Midnite, Betfair, William Hill, Ladbrokes, and Coral. These firms publish their UKGC “Account number” in the footer and route that badge to the regulator’s site. They also enforce GB rules such as no credit‑card betting, mandatory age and identity checks before deposits, clear settlement rules for forfeits/timeouts, and access to self‑exclusion tools.
 
 For CS2 specifically, the better UKGC‑licensed options tend to offer: pre‑match lines on match winner, map winner, map handicaps, total rounds, pistol‑round markets, and occasionally player‑prop style markets for majors; live (in‑play) markets on map winner and round totals; early payout/cash‑out on certain events; and clear voiding policies for roster changes or technical pauses. Coverage quality varies: Bet365 and Betway typically post the deepest CS2 menus; Midnite is e‑sports forward and often lists smaller tournaments; Betfair and William Hill cover majors and top‑tier leagues with solid liquidity.
 
 How to verify a GB licence before you place a bet:
 - Check the site’s footer for “Licensed and regulated by the Gambling Commission” with an account number.
 - Cross‑check that account number on the UKGC’s public register: UKGC public register.
 - Confirm that the operator serves Great Britain (England, Scotland, Wales) and not just a .com domain with a non‑UK licence.
 - Ensure payment methods align with GB rules: debit cards and certain e‑wallets are standard; crypto deposits are not permitted under a UKGC sportsbook/casino licence.
 
 Distinguish regulated cash betting from skin‑based wagering or case‑opening. If a site uses game items or “cases” as currency, that is not part of the UKGC framework for betting on CS2 matches. Skin gambling and unlicensed case‑opening brands are often blocked for GB customers and do not meet the consumer protections required by the Commission. Likewise, offshore e‑sports sites widely promoted around tournaments but missing a UKGC account number should not be treated as GB‑licensed. For clarity: CSGOFast and other skin/case services are not UK‑licensed sportsbooks for CS2 match betting.
 
 Market depth you can realistically expect on UK‑licensed books:
 - Majors and S‑tier events: robust pre‑match and in‑play, map‑by‑map markets, occasional boosts, and partial cash‑out.
 - A‑/B‑tier events: match winner, total maps/rounds, sometimes handicaps; in‑play on main lines only.
 - Lower‑tier or academy events: limited to match winner, often pre‑match only.
 
 Settlement and rules worth checking in the site’s help/house rules:
 - Best‑of formats (BO1/BO3/BO5) and what happens if a map is not played.
 - Technical forfeits and walkovers.
 - Player substitutions and coach stand‑ins.
 - Overtime handling for totals and handicaps.
 
 Onboarding differences you’ll notice with UK‑licensed CS2 books:
 - Full KYC happens up‑front or shortly after registration; expect to provide proof of age and address.
 - Deposit limits, time‑outs, and reality checks are built into the cashier and account settings pages.
 - Promotions have tightly defined terms and are restricted by GB advertising standards.
 
 If you want an up‑to‑date shortlist compiled by a third party that focuses specifically on Great Britain, this rundown is a useful starting point: CS2 betting sites in UK. Use it in tandem with the UKGC register above to confirm the licence details for any brand you’re considering.