In article , Richard J Kinch wrote:
Please can anyone advise on what I can do?

Even if you get the key out, the reason it stuck may be a faulty mechanism
that will just get the next one stuck.

Or it may be simply that the lock needs a bit of lubrication.

Drill it out and replace the lock. The metals are soft; this isn't
difficult.

That's just ridiculous. Get the key out, then lube the lock with powdered
graphite, or graphite in oil. There's no need to replace the lock.

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Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?