Hanger 111 have a +35bhp kit for the S220.
It’s an ECU reflash and injectors for £953+VAT.
Details here … Exige S ECU Reflash +35 Bhp | Hangar 111
What’s the catch? I thought a 35bhp upgrade was new ECU, injectors and pump?
Obviously fitting would be extra, possibly £500.
They might have found something that they can do now , or are happy doing that they couldnt do before.
Stop teasing yourself though, everyone knows throwing the GDP of a developing country is the only way to do this 
Nothing really other than you’re forced into paying them to install. ECU and Injector swap would take an hour or two for most people with a basic toolkit.
There are a couple of options creeping back onto the market for reflashes of the OEM ECU to get the 260 upgrade, they’ve been doing it for ages in the US to varying levels of success but it seemed to be a quiet area of development in the UK for some reason.
It’s really cheap performance to be honest, I’d add a fuel pump to that combo though too.
You don’t need a pump to get to 260hp, but anything beyond that it is an absolute requirement.
Yes if the standard pump is in fine fettle, But for the cost of a denso uprated pump is it worth the risk?
Some people argue a pump is needed (namely, people who make fuel pump upgrades for the Elise platform 
) and some people don’t. For me they’re cheap insurance and it’s just belt and bracer stuff when upgrading a car. 
I recently had a 260 upgrade done by Elise Spares. Had a couple of teething issues but was promptly resolved. This was injectors and ECU reflash (black dash) for £1032 vat/delivery included in that price.
I then paid near to £300 for Injector upgrade. I wasn’t sure if it was needed or not but wanted to ensure the upgrades had a bit more security with an uprated pump system installed.
Total cost was £1300 with me doing the install of the injectors/fuel pump.
Yes completely agree, now most cars are rather older, it would probably be very sensible to upgrade it at the same time