Ask IMPT questions before applying
Clarify with them on their post valuation amount.
They are not transparent about this. Only when you have filled up their lengthy application form and taken another 1 hour long interview will they reveal to you whether the amount you're asking for is too high and they will reject you based on this.
The application form takes about 45 minutes of your time and require a lot of information, more than your average application form for other large VC fund. Most VCs only ask for these information in the due diligence and negotiation stage, but according to PitchDrive, its to drive their analytics driven funnel (which is completely absent) by the way.
Before you apply for these kind of networks, always cross check with their profile on Crunchbase and see what are the recent investments they have made. I was skeptical before I joined and unfortunately my assessments were right.
Also clarify with their support agent on the average check size, post valuation amount they are looking for before deciding if you wish to continue. They also charge 7K pounds once you've fund raised successfully, which for the pre/post valuation amount they're looking for pre-launch, isn't going to be much anyway. So you have to make your own assessments.
Ask all these questions to their live chat support before deciding if you wish to join their network. The only good thing about this network is their support agents are very responsive. So I give them credits for this.