Toys for babies and children, including educational, outdoor, activity and character toys, party toys and gift-bags.
Children's character toys and other things such as bedroom furniture. Standard delivery from £3.95, depending on weight
Craft, educational and fund-raising products. Standard UK delivery free over £75, otherwise £3.95
Huge range including toys as well as health, beauty and mother & baby. Delivery on most orders free over £40, otherwise £2.95 to home or free to a store.
Educational and other toys from infancy onwards. Family learning for fun. UK delivery £4.95 per order. 
Character toys etc, most of which they make themselves, so it is a bit different. Free UK delivery on all orders. 
Outdoor active fun, such as swings and other playground equipment, bikes and scooters, garden sports. Free delivery on most orders to UK mainland. Loyalty points.
Possibly the most famous toy shop in the world! Gifts, gadgets, toys and games. Free UK mainland delivery on orders over £50, otherwise from £4.99.
Lego's own site. Shop for your lego kits and bits, find out what is new or coming, even book a Lego holiday. 
Massive range of toys, baby things and gifts, as well as home, fashion, technology, garden, electrical, sport and leisure. Standard UK delivery free over £30, otherwise £3. 
Indoor and outdoor toys, games and puzzles. Standard UK delivery free over £30, otherwise £3.95.
Indoor and outdoor toys and family leisure. Links to Babies 'R Us, selling baby and nursery essentials. Free delivery over £50 otherwise £4.95
This page has a focus on companies selling indoor and outdoor toys. Also, don't forget there are some excellent children's books on the books page.
For traditional toys, the first places to try are usually Hamleys, Toys 'R Us and the Toyshop. But don't forget that the department stores carry lots of toys too, especially around Christmas and may have deals and discounts, which can make them cheaper than the more obvious outlets. It's not just MPs and Londoners who can buy toys at John Lewis! Not only do they have a massive range, but they also have competitive prices. They deliver free on orders over £30 or you can collect free from John Lewis stores and some Waitrose stores as well.