The William Hill promo code for the current welcome offer is GBE100. It goes with Wager £10, Get 100 Free Spins, an offer for new UK players, and it is used alongside a deposit of at least £10. The full conditions are in the terms above, and T&Cs apply.
The code is only one part of the offer. What it unlocks, the game the spins apply to, the cap on what can be withdrawn and the time limit all matter as much as the code itself, and they are explained below.
What the code does

The code GBE100 is tied to the welcome offer Wager £10, Get 100 Free Spins. As the steps above show, you create an account, deposit at least £10, use the code and then play the eligible game. If you have not registered yet, the sign-up page walks through the account. T&Cs apply.
What the offer contains
The offer includes 100 spins, each valued at £0.10, and they are linked to Gold Blitz Extreme. The code does not change those figures or open up other games. The free spins page goes through the spins in detail, and T&Cs apply to them.
Limits that sit alongside the code
Two limits are worth knowing before you enter anything. The maximum cashout from this bonus is £30, and the offer is valid for 1 day(s). Neither depends on the code: they are conditions of the offer. A code can look like a shortcut to a generous deal, but the terms are what decide what the offer is worth. If you are comparing offers, read those two figures first.
The deposit comes with the code
Because the offer needs a minimum deposit of £10, the code is not a way to get something without paying in. If your search was for a promo that costs nothing, the no deposit bonus page covers that question. For the deposit itself, the deposits page explains the payment options on this site.
Codes and other pages on this site
A promo code is one kind of bonus code. The bonus code page explains how codes work in general, and the welcome bonus page puts this offer in context as the main package for new players. The bonus offers page lists other promotions that are currently live. Each of them has its own conditions, and T&Cs apply to every one.
Reading the terms before you enter the code
The terms table above is where the conditions are listed, so check it before you use the code. The rows show the offer title, the number of spins, their value, the minimum deposit and the time limit. Anything the table does not cover is in the full terms at William Hill, which are worth reading in full before you pay in. The terms and conditions page covers the site-level rules. T&Cs apply.
How the spins are played
Slots are games of chance. Each spin is independent, the paytable shows what each combination pays and any features are set by the game. Online slots in the UK have a minimum spin time and a maximum stake per spin, and the spins in this offer run within those rules. Looking at the game information before your first spin is the sensible way to know what to expect. The Starburst guide is an example of how a slot's paytable and features are described, though that game is not listed as eligible for this offer.
Where to find the code on this site
The code appears in the steps and in the short terms above, so you do not have to search for it elsewhere. If you are signing up for the first time, the order is simple: register, deposit, then use the code. The login page is for players who already have an account.
What the code does not change
The code does not alter how the eligible game works. Its paytable, features and return to player are the same with or without the offer, and every spin is random. What the offer sets is the funding of the session and its limits: the spin value, the cashout cap and the time limit. Judging the offer on those terms, and not on the fact that a code exists, is the clearest way to decide whether to use it. T&Cs apply.
18+ · T&Cs apply
Mistakes that can cost you the offer

The facts for this offer point to a few places where it is easy to slip. None of this replaces the full terms at William Hill, which you should read before you deposit.
Mistyping the code. The code is GBE100. Copy it exactly as written and check it before you confirm. A code is a precise string, and a small error can mean it is not recognised.
Paying in less than the minimum. The offer needs at least £10. Check the amount before you confirm the payment, because a smaller amount does not meet the requirement.
Playing the wrong game. The spins apply to Gold Blitz Extreme. Opening another slot does not use them, and the code does not extend them to other titles.
Missing the time limit. The offer is valid for 1 day(s). Decide in advance when you will play, so that the time limit is not a surprise.
Expecting a bigger payout. The maximum cashout from the bonus is £30, so plan around that figure and not around the number of spins. Results are random, and the code does not change them.
Using the offer when you are not eligible. The offer is for new UK players. If you are an existing customer, check the bonus offers page for what else is available, and read the conditions for any promotion before acting on it. T&Cs apply.
Is the promo code worth using?

If you were going to open a William Hill account anyway, using the code is sensible, because it is how the welcome offer is claimed. You get 100 spins on Gold Blitz Extreme in return for a deposit of at least £10. T&Cs apply.
Who it suits. A new UK player who wants a defined offer on one game, is comfortable reading the terms first and understands the limits in advance. Entering the code takes seconds; the part that deserves attention is the conditions around it.
Who should skip it. Anyone who wants to pick the game, anyone looking for a large payout and anyone who cannot use the offer within its validity period of 1 day(s). The cap of £30 on the bonus is a real limit, and the single eligible game narrows the choice further. If those points count against it for you, the offer is not worth chasing just because a code exists.
A fair summary. The code is simple and the offer is narrow. It will suit a particular kind of new player and leave others cold, which is a perfectly normal outcome for a welcome offer.
Before you commit. Check the code, the amount, the game and the time limit against the table above, then read the full terms at William Hill. If one of those does not suit you, passing on the offer is a sound choice. A welcome offer is a convenience, not a reason to join a casino you were not already considering. T&Cs apply.
A short comparison. An offer with a code is no better or worse than one without: what counts is the set of conditions. Here the conditions are a minimum deposit of £10, one eligible game, a validity period of 1 day(s) and a cashout cap of £30. Whether that is attractive depends on how you like to play.
Your deposit is your own money, so it should be an amount you can afford to lose. When you are ready, you can visit William Hill and check the live terms before you pay in. If you want to see how the featured slots work first, the slots page is a starting point.

