Good gym mainly focused on strength but also has good selection of cardio.
Plenty of equipment, although quite a few out of order. Free parking in Xscape carpark, which was quiet when I went, however...
Health Central Leeds
Really good friendly gym, good if you need to use a gym locally.
Energise Leisure Centre
Nice new gym. Friendly staff and very inclusive atmosphere. Some teenagers but no-one making trouble
Great gym for weight training, a small but well equipped cardio area and friendly staff.
Fitness Flex Pontefract
Plenty if equipment so no waiting time opening hours suit everyone