Published: 09:11 EDT, 7 July 2022 | Updated: 09:15 EDT, 7 July 2022 TSB has become the latest high street bank to boost rates across a range of its savings products, following on from Santander earlier in the week.The bank, which has more than 200 branches across Britain, has upped its fixed rate bonds to as high as 2.5 per cent as well as boosting three of its cash Isa deals.TSB hiked its one-year fix rate from 0.81 to 2 per cent, its two-year deal will now pay 2.2 per cent instead of 1 per cent, while its three-year deal has risen from 1.