Boardman hybrid Pro non standard headset bearings?

francis666

Getting a bit stuck.
Bought a frame and and want to fit a set replacement forks.
The forks are 1 1/8" non tapered The standard replacement bearing are for Tapered and go from 1 1/8 to 1.5"

I don't trust my calipers either as I'm sure they're telling me the inside width is 43mm? (ok me not the calipers) yet.
The standard bearings suggest that the inside width of the the tube is 42mm?

I cant find any head tube drawings to take the sizes from either.

Does any one know set of integrated bearing that will fit a standard fork size (1 1/8" non tapered) to this frame?
Its driving me mad.

Many Thanks
Francis