I've just had a look in my virtual brochure as I thought I had a few in the right area bookmarked for quick weekends away, but I don't have as many as I thought.
If you look at Dobrudden, it might be worth giving them a call to check their EHU as I'm sure they told me they only had a very low ampage (or whatever the relevant electrical thing is!)
I also have this one near Huddersfield, and this one near Halifax, both reasonably close to Manchester and Bradford.
Don't forget to leave a review of the campsites you have visited this year or last!
I don't think he means Bradford in West Yorkshire!
Presume the OP means Bradford in Manchester near the Etihad stadium.
Nearest sites are as suggested around the Oldham and Rochdale areas or I think there might be a couple in Bury.
I would recommend Hollingworth Lake. Easy motorway access to Manchester and a couple of decent pubs nearby in scenic surroundings,
Bradford Gas Works (Manchester) was a major landmark. The gasholders are still there, but the area is now referred to as Eastlands. Wastelands more like. The OP is advised to follow the advice re. Hollingworth Lake, though the Caravan Club site at Bury is not that far and from all accounts a nice place to stay if you are a member.
I knew the name of the area, hence my reply above. However having just googled it, I didn't know that there was a colliery there. But then, I'm not originally from the Manchester area.