I have a racing bike with the wheels secured by axle nuts. For the rear wheel, when I secure the nuts to finger tight the wheel turns fine, but when I tighten them properly the wheel is stuck and will move only with a lot of effort on the pedals.
When the wheel is loose out of the bike it turns fine and, like I say, it turns when the nuts are finger tight.
The wheel has worked in the past. The only thing I have changed recently is that I had to remove it to change some of the spokes, but I'm not sure why this would cause this problem. I've checked and it doesn't seem to be rubbing on the stays or the brakes. I have had that problem in the past, but this is very different in that the wheel barely turns when I turn the pedals.
The wheel uses a freewheel (6 cogs) rather than a freehub.
UPDATE on 8 December
I removed the wheel and then removed the freewheel and adjusted the position of the locknuts and spacers. I also removed and refitted the derailleur, and then refitted the wheel. The wheel then worked ok for a while, but then seized up in the same way.
I have since disassembled, greased and reassembled the axle. I have then given it a 10 minute test ride and the wheel did seize up. However there was quite a lot of creaking and clunking coming from the rear wheel area. This was something which was happening before the wheel seized up (I forgot to mention it in the original version of the question).
I've attached a photo of the rear wheel with the freewheel still attached, and another with it removed.
Grateful in advance for your help.