Looks like a brass filter. Good idea!My wife rang the "pump man" last evening and he turned up at 09:30. All sorted now with new fittings (on our side of the meter).
About 17:00 today our Government water supply pipe failed. Although the pipework was installed by them, it is on our side of the meter. Obviously it's Saturday and there is no answer from the Water Authority and I would be surprised if there's any answer tomorrow.
Looks like a brass filter. Good idea!