Speculation continues ahead of the royal wedding this weekend.

Prince Harry and Meghan Markle will be tying the knot at Windsor Castle this Saturday New Zealand time.

It's believed Markle will have two wedding dresses on the day.

What Kate Wore website editor Susan E Kelly told Mike Hosking people are already comparing what Markle will look like to what Kate Middleton looked like on the day of her wedding.

"Meghan and Harry don't have to abide by the uber-strict rules of being the next in line to the throne, so she can be a little more free in her fashion choices."

LISTEN TO SUSAN E KELLY TALK WITH MIKE HOSKING ABOVE

Concern the media spectacle over Meghan Markle's father, will add fuel to the fire to those against the royal wedding.

He may now walk his daughter down the aisle, after yesterday saying he wouldn't be going.

Royal historian Anna Whitelock told Mike Hosking she worries the "yes he will, no he won't" saga will amplify nay-sayer's voices.

"This gives those detractors energy in the sense, 'look what happens when you move and marry outside of the traditional pool of people, you have all this soap opera of drama."

LISTEN ABOVE AS ANNA WHITELOCK SPEAKS WITH MIKE HOSKING

The boss of Harcourts says he's concerned a shared equity housing scheme could leave Government and the buyer with a whole lot of debt.

Harcourts CEO Chris Kennedy says it's a positive to them if more property's being sold.

But he says they have a responsibility that the people they sell property to, can afford it.

Kennedy told Mike Hosking they don't want people in ten years not having paid anything back - and actually being in a worse position if the value doesn't rise.

"At the end of the day, it's only the interest free part, I'm still having to pay down the equity, so it's just a question of the affordability."

LISTEN TO CHRIS KENNEDY TALK WITH MIKE HOSKING ABOVE

There's confidence a larger number of retirement villages in the pipeline won't end up being white elephants.

A new study by real estate and investment management business JLL New Zealand has found 81 new retirement villages are planned throughout New Zealand.

That's despite an annual rise of only zero point two percent in the number of Kiwis over the age of 75 living in them.

JLL New Zealand associate director Tom Barclay told Mike Hosking there's been a slight fall in demand because of factors like the levelling off of house prices.

"We're forecasting over 25-year time horizon so comparisons this year don't have as much meaning when we look at the silver tsunami that's going to be coming over the next few decades."

LISTEN TO TOM BARCLAY TALK WITH MIKE HOSKING ABOVE

When Mike Hosking Breakfast last visited London, it was for the Brexit vote to decide whether or not the UK would stay in the European Union. 

The country voted by a slim majority to leave, but two years later, that is proving a difficult task to achieve.

The European Union has warned Britain time is running out to seal a Brexit deal, to ensure London doesn't crash out of the bloc next March.

Its Brexit negotiator says no significant progress has been made since March.

But a spokesman for Prime Minister Theresa May says the "focus is on getting things right", rather than meeting a deadline.

CNN's Richard Quest told Mike Hosking things seem to be going around in circles.

"I wish I could say there was clarity, but the issues upon this thing was going to flounder remains exactly the same as they did two years ago."

Quest says Britain can't have an open Northern Irish border without allowing freedom of movement.

"It is the ticking time bomb which could destroy the negotiations, because, at the moment, it is impossible."

LISTEN TO RICHARD QUEST TALK WITH MIKE HOSKING ABOVE

It won't just be Prince Harry and Meghan Markle professing their love for each other this weekend.

A mass vow renewal ceremony's going to be taking place in Te Aroha to mark the occasion.

Organiser Angela Thomson told Mike Hosking it's going to be a great day, with its own pomp and pageantry.

"We have a royal procession. We have the most gorgeous little set of 12-carriage train that is going to take the children around the Te Aroha domain, and they are going to have little crowns on them."

LISTEN TO ANGELA THOMSON TALK WITH MIKE HOSKING ABOVE

The notion of a Super Rugby team based in the Pacific Islands is nothing new but the Pacific Players Union chairman believes the latest plan has more substance.

The Government's funded a feasibility study into a team that would see a team based in Suva and play some home games in Samoa, Tonga, Auckland and Sydney.

Pacific Union Players chairman Hale T-Pole told Mike Hosking the timing is better.

"Working hard trying to rectify and get the tournament more exciting and just the good timing of this pushing for a Pacific Island team, it's just the right time at the right spot."

Prime Minster Jacinda Ardern says the study was commissioned by the previous government.

"This was news to me as well, it was obviously before my time, Murray McCully instigated a review, a feasibility study around this option. I haven't seen the outcome of it, I've asked."

LISTEN ABOVE AS HALE T-POLE SPEAKS WITH MIKE HOSKING

The Prime Minister's set her sights on maintaining our strong diplomatic relationship with China.

Foreign Minister Winston Peters heads to China next week, which coincides with the 10-year anniversary of the free trade agreement between the two countries.

Jacinda Ardern told Mike Hosking with that in mind, there needs to be some upgrades to the treaty.

"There's quite a few bits and pieces that are quite significant in our relationship, that we have hit milestones and it's a useful time for the Minister to visit and I am hoping to also make a visit before the end of the year for that reason too."

Ardern says the focus of New Zealand's work in the Pacific has to be about us and our contribution.

"Yes, we have acknowledged that there are others present in the Pacific who are taking a greater interest but for us ultimately our position has been 'we need to step up our relationship, it is different, it is unique, we are part of the pacific.'"

LISTEN ABOVE AS JACINDA ARDERN SPEAKS WITH MIKE HOSKING

A security expert says Prince Harry and Meghan Markle's high profiles and former occupations will make wedding security a massive problem.

The couple will be tying the knot at Windsor Castle on Saturday night New Zealand time - in front of 600 guests and world media.

University of Buckingham political professor Anthony Glees says with Meghan Markle being a global superstar who's criticised Donald Trump and Prince Harry the future King of England's brother and having fought in Afghanistan - they'll be targets.

But he told Mike Hosking that Windsor Castle is extremely secure, and authorities can trace everyone who's going in and out by car.

"It's kinda cut off from the surrounding countryside. It's on an escarpment, it's high, and above all, it's a place you can only approach from certain routes."

LISTEN TO ANTHONY GLEES TALK WITH MIKE HOSKING ABOVE

There's close interest to see what China's future influence will be in the Pacific.

Winston Peters heads to China next week and will be discussing how they can work together to help Pacific nations.

Massey University East Asia expert Marc Lanteigne told Mike Hosking there's some concern over what the relationship will look like.

"China has been increasing its own diplomacy in the Pacific area. That said, there is also a great potential for collaboration between Beijing and Wellington on state and development projects."

LISTEN TO MARC LANTEIGNE TALK WITH MIKE HOSKING ABOVE