ATMs are widely available. Major credit cards such as Visa and MasterCard are accepted in most but not all hotels and restaurants.
There is absolutely no obligation to tip in Wales, even if a 'service charge' has been automatically added to your bill (although this is still uncommon in Wales). Tips are only left if the service is particularly good or at least satisfactory.
Restaurants, cafes and bars with table service Up to 10% for good service. If you order at the bar or counter, you're not expected to tip.
Taxis Fares are often rounded up.