Not sure what impact this virus is having, but it is tempting to think there has to be some effect, right? 

Impact on the income and profitability is not a hardship or valid argument as they will point out that you knew or should have known the limitations and restrictions regarding the zoning prior to purchasing the property. 

How will it impact my mortgage rate that is fixed and for primary residence?

Future income/expenses and especially depreciation will certainly have an impact on future gains realized and recapture, but from a purchase transaction standpoint it is not a problem to execute in this manner, and it wouldn't create any future basis problems as a result of the execution as opposed to taking another route to purchase.

Wanted to get folks' thoughts on how COVID-19 and students doing more online classes will impact the rental market, even in the short-term, in London.  

Definitely going to look into it, could make a huge impact in winter occupancy!

We also went through the city and paid the impact fees and had it registered as a legal accessory apartment, which was not difficult to do. 

In our case, about 20% of the tenants took advantage of the discount, and we later learned that some of them had lost their jobs, but it didn’t impact us since they’d already paid in advance.2.

If you upgrade your lead spend just a little into a vetted source, a VA will have much more impact.

The preapproval was only given the seller to show them that you were a qualified buyer and has no real impact on getting escrow closed.