humpakwatan, thank you so much and respect to you!

)
have you contacted them yourself?
we've sent them an e-mail and they responded to us back on the next day telling that they haven't received any request for b/checks - even referred us to order CAIPS notes.
I'm confused - looks like CIC London delaying our file just because they can.. shall we go to MP instead of wasting time trying to "patiently wait" .. not sure if this will be of any help?!

No I have not contacted them myself but I will be once I receive my caips notes that i have ordered last week.
I think that means that they have not started background checks on your file yet. You should order CAIPS notes to see what is going on with your file and it can also show you weather or not the background checks have completed and if the initial review has been done. You can also try emailing them to find out any updates on your file to see what they say?
Regarding contacting MP I have found it to be useless for myself. The MPs give same info you can get by emailing CHC but you could give that a shot. From other cases I have concluded that MPs are only helpful if the embassy has completed background checks and asked for your passport, then your MP can get them to send the passport back faster.