Re-survey this area. It looks like there are some additional addresses attached to/around the big blocks of flats (62 and 64).

via StreetComplete 57.3

Immediately to the right of where the narrow pedestrian footpath begins is the entrance to "10 Creek Cottages".

via StreetComplete 57.3

I'm not sure how to tag this building, which is attached to the church. It seems to be a hall in which local events may take place, some of them non-religious.

Perhaps amenity=community_centre is appropriate? I believe this building has a similar purpose to Vine Hall (on Vine Road).

Bench here, should be visible on imagery.

via StreetComplete 57.3

In context of overlay "Buildings" – Residential Building – way/1292896700 via StreetComplete_ee 58.2:

53 on the left, 51 on the right.

In context of overlay "Buildings" – house number 34A: Residential Building – way/1293046543 via StreetComplete_ee 58.2:

Address 34 is actually down the left side of this building.
So probably best to split it in half, make 34 the left side and 34A the right side.

I'm not sure how to tag this building, which is attached to the church. It seems to be a hall in which local events may take place, some of them non-religious.

Perhaps amenity=community_centre is appropriate? I believe this building has a similar purpose to Vine Hall (on Vine Road).

In context of overlay "Buildings" – house number 63: Residential Building – way/1279620492 via StreetComplete 57.3:

There is another address here: 63A (to the left of 63).

This is the "Molesey Veterinary Centre".
Address: 4 Park Road, East Molesey, Surrey, KT8 9LE.
Phone number: 02089791384.
Probably best to double check the phone number online, just to make sure I haven't made any errors in copying it out.
The car park in front is private, for customer use only.

via StreetComplete_ee 58.2

Possible car park here? Survey.