Keying alike

I'd like to key alike some nightlatch cylinders and some euro cylinders so that any one key can operate any lock in the external doors. Is it possible to get nightlatch cylinders and euro cylinders keyed alike so that a key that operates the euro cylinder will also operate the nightlatch cylinder?

To answer my own question .. according to Ironmongorydirect.com you can.

You will need a competent locksmith to re-pin them. Discount suppliers rarely offer the service.

Ordinary 5-lever locks are fairly easy once you understand it.

Some suppliers sell keyed-alike locks, especially camlocks and padlocks, but often they sell them to all customers with the same combination, so your key is not secure and will probably not meet insurer's requirements.