Have you tried the Netmums website? They list activities for preschoolers in the local area. There a re a few to choose from, but it depends where you live and if you can travel. Also ther's the Sheffield Telegraph Listings page, but that's a bit more limited. Good luck!
Here's a sample:
851 Ecclesall Road, Sheffield, South Yorkshire, S11 8TH
Telephone: 0114 2665743
-6 different gym class levels from newborn
-4 different music class levels from 3 months
-Classes held over a variety of days and times. Contact us for a full detailed class timetable
-Free unlimited open gym sessions for all members
-Open all year round
Gymboree offers unique and inspired classes from newborn to under 5s at our incredible facility on 851 Ecclesall Road. Our elaborate equipment set ups, enthusiastic teachers and age specific classes are all geared to turn fun into learning.
hillsborough, st johns memorial hall, forbes rd. millhouses park tennis courts, sheffield
Contact: Emma de Chenu/ Jack Howieson
Telephone: 07722540846/ 07790775223
Lessons are usually in the parks, however we are moving indoors in Hillsborough for the winter term, millhouses will remain outdoors (thanks to the lovely coffee shop where parents can wait)Classes are from age 2-4years old Millhouses class is from 10am - 11am on a Tuesday and Hillsborough from 10am -11am on a Friday. Ecclesall rd venue TBA for Wednesday
Booking is essential.
Lessons cost £4 a session