Yes, you can use your colleague discount on George.com. Here's how:
1. Go to George.com, register your details and create an account.
2. On the payment page, select Pay with an eVoucher.
3. Add the code ASDA.
4. Enter your Walmart number and Discount Card number and submit your details.
5. Tick Save my details.
Once done, you will be able to see that your discount appears in the basket summary.