Barclays is raising prices on many products by 10 basis points, Accord is raising some by up to 28 basis points and Gen H is raising rates for the second time in a week to 20 basis points.
NatWest and Leeds Building Society both raised rates this weekend and last week, and Keystone also revised rates today after swap hikes.
On Friday, Nationwide, Coventry, Nottingham and Virgin Money all announced they would increase interest rates.
At Barclays, there will be widespread increases of 10 basis points on residential products tomorrow.
At Accord, two-year fixed interest rates across its range of new residential contracts will increase tomorrow by up to 28 basis points, three-year interest rates by up to 19 basis points and five-year interest rates by up to 21 basis points.
For the transfer of housing products and additional loans, some two-year fixes increase by 20 basis points, three-year fixes by 17 basis points and five-year fixes by 13 basis points, apart from approximately 90% LTV deals.
Among Gen H, some rates will increase by up to 20 basis points today from 5:30 p.m.
Of the increases, all core interest rates will increase by 10 basis points.
High loan-to-income products between 60% and 95% loan-to-value will increase by an additional 10 basis points, for a total of 20 basis points.
In the email to brokers, Pete Dockar, Chief Commercial Officer for Gen H, said: “Money markets are quickly pricing out the prospect of a base rate cut this year.
“Until we have more clarity on the conflict in the Middle East, we can expect this uncertainty in the market to continue.
“As usual, Gen H is fast in everything we do – whether it’s product launches, service levels or rate changes – so while we’ll be among the first to raise prices, we’ll also lower prices again as soon as we can.”
John Charcol, technical mortgage manager Nicholas Mendes, said: “Mortgage rates had been gradually falling in recent weeks as markets priced in a series of Bank of England rate cuts later this year.
“The escalation of tensions around Iran has changed that tone quite quickly, as financial markets tend to react quickly when geopolitical risks impact inflation expectations.
“While oil prices have retreated from previous peaks, they remain significantly higher today and are still trading just above $100 and up about 10% overall.
“Energy prices are typically one of the first transmission points for inflation expectations and that uncertainty has filtered directly into the government bond and swap markets.
“We have seen a sharp move in government bond yields, with the two-year yield currently up around 21 basis points at around 4.08% and the five-year up around 16 basis points to around 4.27%.”
Mendes added: “These moves are important because they support the financing costs that lenders use when pricing fixed-rate mortgages.
“As a result, we are likely to see a new wave of lenders withdrawing or repricing deals in the coming days, including some that only raised rates last week.
“When funding costs move so quickly, lenders typically react quite quickly as existing hedging disappears and try to protect margins.
“Looking ahead to the week ahead, much will depend on whether markets settle down or whether volatility continues.
“Swap markets had already priced in several Bank of England cuts this year, but expectations have changed rapidly.
“At this stage we are closer to a scenario where perhaps only one cut occurs throughout the year, rather than what the serial markets were anticipating a few weeks ago.”