Hive conversion on Potterton oil boiler - heating only

Hi Gents, after some advice on what should have been a relatively simple conversion, but I am hesitant due to lack of boiler experience.
Have a Potterton floor standing oil boiler - supplying heating only, currently has Smiths controller, frost stat (possibly) house stat, pump feed and wired as shown in picture (picture in attached file - fingers crossed...). The boiler, controller, pump, as in photo is in an outhouse attached to house wall, hence partial wish to go wireless! (No switched valve/3 port valve)
Boiler has single flex running to it, house stat seems inoperative which is another benefit with the Hive stat part of install, all the wireless/internet part ok but need some on site advice, help, assistance - anyone on here local? Or recommendations? Live Nr Wragby about 15 miles East from Lincoln..... many thanks in anticipation, admin please delete if asking for services is not allowed.

The white flex is the boiler supply, and additional feed to left of main power is a fused down security light which can be ignored, but the rest needs a proper rationalisation, its just the boiler to Hive connections that have me a bit flummoxed....

Maybe read the similar threads...... There are loads

Murdoch said:

Maybe read the similar threads...... There are loads

Click to expand...

@' Murdoch' many thanks - I spent a couple of hours yesterday looking through other hive/nest/boiler posts, and was unable to find anything conclusive. Even one initially helpful looking post descended into a txt debate with other parties advising it as being incorrect/correct!
But failure to unearth information in the couple of hours enough to offer confidence - I am, as per my last line, for expediency seeking someone or recommendations in my area to conduct or assist with the task. The last complication I wish for is to damage the boiler - this week - brrrrr...!

What you probably noticed is that a lot of us don't take too kindly to all and sundry coming on here for free advice .................

"seeking someone or recommendations in my area to conduct or assist with the task.........."

That's not specifically asking for free sir, its asking for help and on- site assistance to which I would expect to pay, but on recommendation - I am NOT boiler experienced or qualified. I am on the "electriciansforum" from my perspective as a former practicing electrical engineer from more than a few years back.