This certainly isn't anything special, but it's interesting and I wasn't bored by it; probably for the most part due to Peter Cushing. When he's on screen, it's clear who the main actor is, even though he's not the main character. Bernard Cribbins over-acts if anything, but is good; and John Richardson is okay. Christopher Lee is also in the cast as the head priest of Ayesha's cult; but it's a shame that he doesn't really get much to do. The camera work was fairly point and shoot, and the special effects were quite ropey (I couldn't tell if the ruined Egyptian city we were looking at at one point was meant to be a model or real (or whether the effect was a bad model or a worse matte painting!)).
I dunno, you tell me.
Overall, quite an ordinary film with a re-hashed Mummy plot, but interesting enough not to be boring due to a pretty solid cast.