Maria wrote:
Hi
I need to repoint the blue bricks at the base of my house. Can I use
ordinary mortar for this? I am not concerned with preserving the
heritage or anything like that (I have found some '5 lime' mortar for
that purpose but it's for heritage buildings and costs more than twice
as much as ordinary mortar!).

Thank you
Sod heritage. Engineering bricks are used because they resist getting
damp and spalling in frost.

So use good strong 2:1 mortar here!

If you want to match rubbish lime mortar color wise, use white cement.