I have a Wireless Honeywell BDR91 receiver on a Combi boiler, and want to change to a Hive Wireless Receiver

[thegaffers]

I have a Honeywell wireless receiver and a Worcester Greenstar junior combi Boiler and would like to change it to a Hive Wireless receiver. I have attached a picture of the wiring, can anyone please advise me on where to connect each wire to the Hive. I seem to have multiple wires in the live terminals and one Black and one Grey Wire in A and B

 

[RandomGrinch]

Assuming you have a single channel Hive...

The black wire in terminal A of the Honeywell, could go into terminal 1 of the Hive.
The grey wire in terminal B, could go into terminal 3 of the Hive.

The two neutral wires on the Honeywell, would both go into the N terminal on the Hive.

Interestingly on your Honeywell, there is a bridging wire between the two L terminals - this is completely unnecessary, they are linked on the PCB!
Remove this link completely!

That should leave you with two live wires, that can both go into the L terminal of the Hive.